diff --git a/cbooking.cpp b/cbooking.cpp
index 263f6e1..1119ce8 100644
--- a/cbooking.cpp
+++ b/cbooking.cpp
@@ -165,7 +165,7 @@ qint32 cBooking::pauseSecs()
 			return(p1);
 	}
 
-	if(w < 21600)
+	if(w <= 21600)
 		return(0);
 
 	if(p < 1800)
@@ -519,6 +519,7 @@ void cBookingList::recalculate(const QDate& date)
 		bFirst	= true;
 
 	qint32				ueberstunden		= 0;
+	qint32				correction			= 0;
 
 	for(;i != end(); i++)
 	{
@@ -534,14 +535,20 @@ void cBookingList::recalculate(const QDate& date)
 			(*i)->setPrevDiff(0);
 		}
 		else
-			(*i)->setPrevDiff((*(i-1))->currentDiff()-ueberstunden);
+			(*i)->setPrevDiff((*(i-1))->currentDiff()-ueberstunden+correction);
 
 		cMonthlyBooking*	lpMonthlyBooking	= m_lpMonthlyBookingList->find((*i)->date());
 
 		if(lpMonthlyBooking)
+		{
+			correction		= lpMonthlyBooking->correction();
 			ueberstunden	= lpMonthlyBooking->ueberstunden();
+		}
 		else
+		{
+			correction		= 0;
 			ueberstunden	= 0;
+		}
 
 		oldVacation	= (*i)->vacation();
 
diff --git a/cmainwindow.cpp b/cmainwindow.cpp
index 33a5b39..bed56db 100644
--- a/cmainwindow.cpp
+++ b/cmainwindow.cpp
@@ -180,6 +180,7 @@ void cMainWindow::openDB()
 		query.prepare("CREATE TABLE monthlyBooking "
 					  "( "
 					  "     datum        DATE PRIMARY KEY UNIQUE, "
+					  "     correction   INTEGER, "
 					  "     ueberstunden INTEGER, "
 					  "     salery       BLOB, "
 					  "     timesheet    BLOB "
diff --git a/cmonthlybooking.cpp b/cmonthlybooking.cpp
index 070335f..68a5533 100644
--- a/cmonthlybooking.cpp
+++ b/cmonthlybooking.cpp
@@ -8,6 +8,7 @@
 cMonthlyBooking::cMonthlyBooking(const QDate& date, QObject *parent) :
 	QObject(parent),
 	m_date(date),
+	m_correction(0),
 	m_ueberstunden(0)
 {
 }
@@ -17,6 +18,16 @@ QDate cMonthlyBooking::date()
 	return(m_date);
 }
 
+void cMonthlyBooking::setCorrection(qint32 correction)
+{
+	m_correction	= correction;
+}
+
+qint32 cMonthlyBooking::correction()
+{
+	return(m_correction);
+}
+
 void cMonthlyBooking::setUeberstunden(qint32 ueberstunden)
 {
 	m_ueberstunden	= ueberstunden;
@@ -62,13 +73,15 @@ bool cMonthlyBooking::save()
 
 	if(query.next())
 		query.prepare("UPDATE monthlyBooking "
-					  "SET    ueberstunden=:ueberstunden, "
+					  "SET    correction=:correction,"
+					  "       ueberstunden=:ueberstunden, "
 					  "       salery=:salery, "
 					  "       timesheet=:timesheet "
 					  "WHERE  datum=:datum;");
 	else
 		query.prepare("INSERT INTO monthlyBooking ( "
 					  "                     datum, "
+					  "                     correction, "
 					  "                     ueberstunden, "
 					  "                     salery, "
 					  "                     timesheet "
@@ -76,12 +89,14 @@ bool cMonthlyBooking::save()
 					  "VALUES "
 					  "                    ( "
 					  "                     :datum, "
+					  "                     :correction, "
 					  "                     :ueberstunden, "
 					  "                     :salery, "
 					  "                     :timesheet "
 					  "                    );");
 
 	query.bindValue(":datum", date());
+	query.bindValue(":correction", correction());
 	query.bindValue(":ueberstunden", ueberstunden());
 	query.bindValue(":salery", salery());
 	query.bindValue(":timesheet", timesheet());
@@ -101,6 +116,7 @@ bool cMonthlyBookingList::load()
 	QSqlQuery	query;
 
 	query.prepare("SELECT	datum, "
+				  "         correction, "
 				  "         ueberstunden, "
 				  "         salery, "
 				  "         timesheet "
@@ -119,6 +135,7 @@ bool cMonthlyBookingList::load()
 
 		if(lpBooking)
 		{
+			lpBooking->setCorrection(query.value("correction").toInt());
 			lpBooking->setUeberstunden(query.value("ueberstunden").toInt());
 			lpBooking->setSalery(query.value("salery").toByteArray());
 			lpBooking->setTimesheet(query.value("timesheet").toByteArray());
diff --git a/cmonthlybooking.h b/cmonthlybooking.h
index af8c020..dee66d7 100644
--- a/cmonthlybooking.h
+++ b/cmonthlybooking.h
@@ -19,6 +19,9 @@ public:
 
 	QDate				date();
 
+	void				setCorrection(qint32 correction);
+	qint32				correction();
+
 	void				setUeberstunden(qint32 ueberstunden);
 	qint32				ueberstunden();
 
@@ -32,6 +35,7 @@ public:
 
 private:
 	QDate				m_date;
+	qint32				m_correction;
 	qint32				m_ueberstunden;
 	QByteArray			m_salery;
 	QByteArray			m_timesheet;
diff --git a/cmonthlyview.cpp b/cmonthlyview.cpp
index ea10658..c079e53 100644
--- a/cmonthlyview.cpp
+++ b/cmonthlyview.cpp
@@ -28,8 +28,11 @@ cMonthlyView::cMonthlyView(const QDate& date, const QMap<QString, QString> code,
 {
 	ui->setupUi(this);
 
+	QRegExp	rxNeg("-?(?:\\d\\d\\d):(?:[0-5]\\d):(?:[0-5]\\d)");
 	QRegExp	rx("(?:\\d\\d\\d):(?:[0-5]\\d):(?:[0-5]\\d)");
 	m_lpValidator			= new QRegExpValidator(rx, this);
+	m_lpValidatorNeg		= new QRegExpValidator(rxNeg, this);
+	ui->m_lpCorrection->setValidator(m_lpValidatorNeg);
 	ui->m_lpUeberstunden->setValidator(m_lpValidator);
 
 	m_lpMonthlyListModel	= new QStandardItemModel(0, 1);
@@ -58,6 +61,7 @@ cMonthlyView::cMonthlyView(const QDate& date, const QMap<QString, QString> code,
 	connect(ui->m_lpNextMonth,															&QToolButton::clicked,				this,	&cMonthlyView::onNextMonth);
 
 	connect(ui->m_lpMonth,																&QDateEdit::dateChanged,			this,	&cMonthlyView::onDateChanged);
+	connect(ui->m_lpCorrection,															&QLineEdit::textChanged,			this,	&cMonthlyView::onCorrectionChanged);
 	connect(ui->m_lpUeberstunden,														&QLineEdit::textChanged,			this,	&cMonthlyView::onUeberstundenChanged);
 
 	connect(ui->m_lpTimesheetView,														&QPushButton::clicked,				this,	&cMonthlyView::onTimesheetView);
@@ -215,6 +219,7 @@ void cMonthlyView::setDate(const QDate& date)
 	ui->m_lpShouldLabel->setText(QString(tr("SOLL Arbeitszeit (%1):")).arg(date.toString("MMMM yyyy")));
 	ui->m_lpIsLabel->setText(QString(tr("IST Arbeitszeit (%1):")).arg(date.toString("MMMM yyyy")));
 	ui->m_lpResturlaubLabel->setText(QString(tr("Resturlaub %1:")).arg(date.addMonths(-1).toString("MMMM yyyy")));
+	ui->m_lpCorrection->setText(secs2String(m_lpMonthlyBooking->correction(), 3));
 	ui->m_lpUeberstunden->setText(secs2String(m_lpMonthlyBooking->ueberstunden(), 3));
 
 	updatePDF();
@@ -341,11 +346,23 @@ void cMonthlyView::onDateChanged(const QDate& date)
 	setDate(date);
 }
 
+void cMonthlyView::onCorrectionChanged(const QString& string)
+{
+	m_lpMonthlyBooking->setCorrection(string2Secs(string));
+	m_lpMonthlyBooking->save();
+
+	m_lpBookingList->recalculate();
+
+	displaySummary();
+}
+
 void cMonthlyView::onUeberstundenChanged(const QString& string)
 {
 	m_lpMonthlyBooking->setUeberstunden(string2Secs(string));
 	m_lpMonthlyBooking->save();
 
+	m_lpBookingList->recalculate();
+
 	displaySummary();
 }
 
@@ -600,7 +617,7 @@ void cMonthlyView::displaySummary()
 	ui->m_lpShould->setText(secs2String(soll));
 	ui->m_lpIs->setText(secs2String(ist));
 	ui->m_lpSaldo->setText(secs2String(ist-soll));
-	ui->m_lpUebertragNaechsterMonat->setText(secs2String(lpFirstBooking->prevDiff()+ist-soll-m_lpMonthlyBooking->ueberstunden()));
+	ui->m_lpUebertragNaechsterMonat->setText(secs2String(lpFirstBooking->prevDiff()+ist-soll-m_lpMonthlyBooking->ueberstunden()+m_lpMonthlyBooking->correction()));
 	ui->m_lpResturlaub->setText(QString::number(lpFirstBooking->vacation()));
 	ui->m_lpUebertragUrlaub->setText(QString::number(lpFirstBooking->vacation()-u));
 
diff --git a/cmonthlyview.h b/cmonthlyview.h
index f5bcd43..1b895b3 100644
--- a/cmonthlyview.h
+++ b/cmonthlyview.h
@@ -40,6 +40,7 @@ private:
 	QDate					m_date;
 	cMonthlyBooking*		m_lpMonthlyBooking;
 	QRegExpValidator*		m_lpValidator;
+	QRegExpValidator*		m_lpValidatorNeg;
 	QStringList				m_temporaryFileList;
 
 	void					setBackground(const int day, const QString& code);
@@ -55,6 +56,7 @@ private slots:
 	void					onTimeChanged(const int day, const int field, const QTime& time);
 	void					onTextChanged(const int day, const int field, const QString& text);
 	void					onDateChanged(const QDate& date);
+	void					onCorrectionChanged(const QString& string);
 	void					onUeberstundenChanged(const QString& string);
 	void					onTimesheetView();
 	void					onTimesheetDownload();
diff --git a/cmonthlyview.ui b/cmonthlyview.ui
index 42ee877..efb7ed9 100644
--- a/cmonthlyview.ui
+++ b/cmonthlyview.ui
@@ -97,7 +97,7 @@
           <x>0</x>
           <y>0</y>
           <width>861</width>
-          <height>263</height>
+          <height>237</height>
          </rect>
         </property>
         <layout class="QGridLayout" name="gridLayout_2">
@@ -117,26 +117,6 @@
      </item>
      <item>
       <layout class="QGridLayout" name="gridLayout" columnstretch="10,1,1,5,1,1,100,0">
-       <item row="4" column="4">
-        <widget class="QLineEdit" name="m_lpTraining">
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-         <property name="readOnly">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
-       <item row="1" column="4">
-        <widget class="QLineEdit" name="m_lpKrank">
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-         <property name="readOnly">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
        <item row="1" column="1">
         <widget class="QLabel" name="m_lpShouldLabel">
          <property name="text">
@@ -147,23 +127,6 @@
          </property>
         </widget>
        </item>
-       <item row="1" column="5">
-        <widget class="QLabel" name="m_lpKrankLabel">
-         <property name="text">
-          <string>Krank</string>
-         </property>
-        </widget>
-       </item>
-       <item row="6" column="2">
-        <widget class="QLineEdit" name="m_lpResturlaub">
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-         <property name="readOnly">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
        <item row="0" column="5">
         <widget class="QLabel" name="m_lpGleitzeitLabel">
          <property name="text">
@@ -171,16 +134,6 @@
          </property>
         </widget>
        </item>
-       <item row="6" column="1">
-        <widget class="QLabel" name="m_lpResturlaubLabel">
-         <property name="text">
-          <string>Resturlaub:</string>
-         </property>
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-        </widget>
-       </item>
        <item row="0" column="4">
         <widget class="QLineEdit" name="m_lpGleitzeit">
          <property name="minimumSize">
@@ -197,8 +150,8 @@
          </property>
         </widget>
        </item>
-       <item row="3" column="4">
-        <widget class="QLineEdit" name="m_lpSonderurlaub">
+       <item row="1" column="4">
+        <widget class="QLineEdit" name="m_lpKrank">
          <property name="alignment">
           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
          </property>
@@ -207,23 +160,6 @@
          </property>
         </widget>
        </item>
-       <item row="0" column="0">
-        <widget class="QLabel" name="label">
-         <property name="text">
-          <string/>
-         </property>
-        </widget>
-       </item>
-       <item row="4" column="1">
-        <widget class="QLabel" name="m_lpUeberstundenLabel">
-         <property name="text">
-          <string>ausbezahlte Überstunden:</string>
-         </property>
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-        </widget>
-       </item>
        <item row="2" column="2">
         <widget class="QLineEdit" name="m_lpIs">
          <property name="alignment">
@@ -234,7 +170,95 @@
          </property>
         </widget>
        </item>
-       <item row="0" column="7" rowspan="8">
+       <item row="2" column="4">
+        <widget class="QLineEdit" name="m_lpUrlaub">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="2">
+        <widget class="QLineEdit" name="m_lpUebertragUrlaub">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="2">
+        <widget class="QLineEdit" name="m_lpShould">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="1">
+        <widget class="QLabel" name="m_lpUebertragLabel">
+         <property name="text">
+          <string>Übertrag:</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="2">
+        <widget class="QLineEdit" name="m_lpCorrection">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="5" column="2">
+        <widget class="QLineEdit" name="m_lpUeberstunden">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="2">
+        <widget class="QLineEdit" name="m_lpResturlaub">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="5">
+        <widget class="QLabel" name="m_lpUrlaubLabel">
+         <property name="text">
+          <string>Urlaub</string>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="2">
+        <widget class="QLineEdit" name="m_lpUebertragNaechsterMonat">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="5">
+        <widget class="QLabel" name="m_lpKrankLabel">
+         <property name="text">
+          <string>Krank</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="7" rowspan="9">
         <layout class="QVBoxLayout" name="verticalLayout_2">
          <item>
           <widget class="QGroupBox" name="groupBox">
@@ -333,7 +357,17 @@
          </item>
         </layout>
        </item>
-       <item row="3" column="1">
+       <item row="6" column="1">
+        <widget class="QLabel" name="m_lpUebertragNaechsterMonatLabel">
+         <property name="text">
+          <string>Übertrag nächster Monat:</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="1">
         <widget class="QLabel" name="m_lpSaldoLabel">
          <property name="text">
           <string>Saldo:</string>
@@ -343,8 +377,15 @@
          </property>
         </widget>
        </item>
-       <item row="2" column="4">
-        <widget class="QLineEdit" name="m_lpUrlaub">
+       <item row="4" column="5">
+        <widget class="QLabel" name="m_lpSonderurlaubLabel">
+         <property name="text">
+          <string>Sonderurlaub</string>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="4">
+        <widget class="QLineEdit" name="m_lpSonderurlaub">
          <property name="alignment">
           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
          </property>
@@ -353,13 +394,6 @@
          </property>
         </widget>
        </item>
-       <item row="4" column="5">
-        <widget class="QLabel" name="m_lpTrainingLabel">
-         <property name="text">
-          <string>Training</string>
-         </property>
-        </widget>
-       </item>
        <item row="0" column="3">
         <widget class="QLabel" name="label_3">
          <property name="text">
@@ -367,13 +401,6 @@
          </property>
         </widget>
        </item>
-       <item row="2" column="5">
-        <widget class="QLabel" name="m_lpUrlaubLabel">
-         <property name="text">
-          <string>Urlaub</string>
-         </property>
-        </widget>
-       </item>
        <item row="0" column="2">
         <widget class="QLineEdit" name="m_lpUebertrag">
          <property name="minimumSize">
@@ -390,7 +417,20 @@
          </property>
         </widget>
        </item>
-       <item row="3" column="2">
+       <item row="1" column="6">
+        <spacer name="horizontalSpacer">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>40</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item row="4" column="2">
         <widget class="QLineEdit" name="m_lpSaldo">
          <property name="alignment">
           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
@@ -400,74 +440,10 @@
          </property>
         </widget>
        </item>
-       <item row="3" column="5">
-        <widget class="QLabel" name="m_lpSonderurlaubLabel">
-         <property name="text">
-          <string>Sonderurlaub</string>
-         </property>
-        </widget>
-       </item>
-       <item row="4" column="2">
-        <widget class="QLineEdit" name="m_lpUeberstunden">
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-        </widget>
-       </item>
-       <item row="5" column="2">
-        <widget class="QLineEdit" name="m_lpUebertragNaechsterMonat">
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-         <property name="readOnly">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
-       <item row="1" column="2">
-        <widget class="QLineEdit" name="m_lpShould">
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-         <property name="readOnly">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
        <item row="5" column="1">
-        <widget class="QLabel" name="m_lpUebertragNaechsterMonatLabel">
+        <widget class="QLabel" name="m_lpUeberstundenLabel">
          <property name="text">
-          <string>Übertrag nächster Monat:</string>
-         </property>
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-        </widget>
-       </item>
-       <item row="0" column="1">
-        <widget class="QLabel" name="m_lpUebertragLabel">
-         <property name="text">
-          <string>Übertrag:</string>
-         </property>
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-        </widget>
-       </item>
-       <item row="7" column="2">
-        <widget class="QLineEdit" name="m_lpUebertragUrlaub">
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-         </property>
-         <property name="readOnly">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
-       <item row="7" column="1">
-        <widget class="QLabel" name="m_lpUebertragUrlaubLabel">
-         <property name="text">
-          <string>Übertrag Urlaub:</string>
+          <string>ausbezahlte Überstunden:</string>
          </property>
          <property name="alignment">
           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
@@ -484,18 +460,59 @@
          </property>
         </widget>
        </item>
-       <item row="1" column="6">
-        <spacer name="horizontalSpacer">
-         <property name="orientation">
-          <enum>Qt::Horizontal</enum>
+       <item row="5" column="5">
+        <widget class="QLabel" name="m_lpTrainingLabel">
+         <property name="text">
+          <string>Training</string>
          </property>
-         <property name="sizeHint" stdset="0">
-          <size>
-           <width>40</width>
-           <height>20</height>
-          </size>
+        </widget>
+       </item>
+       <item row="0" column="0">
+        <widget class="QLabel" name="label">
+         <property name="text">
+          <string/>
          </property>
-        </spacer>
+        </widget>
+       </item>
+       <item row="5" column="4">
+        <widget class="QLineEdit" name="m_lpTraining">
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="1">
+        <widget class="QLabel" name="m_lpResturlaubLabel">
+         <property name="text">
+          <string>Resturlaub:</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="1">
+        <widget class="QLabel" name="m_lpUebertragUrlaubLabel">
+         <property name="text">
+          <string>Übertrag Urlaub:</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="1">
+        <widget class="QLabel" name="m_lpCorrectionLabel">
+         <property name="text">
+          <string>Correction:</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
        </item>
       </layout>
      </item>
diff --git a/common.cpp b/common.cpp
index c3f1a6a..51886c6 100644
--- a/common.cpp
+++ b/common.cpp
@@ -28,11 +28,18 @@ QString secs2String(const qint32& secs, qint8 leading)
 
 qint32 string2Secs(const QString& string)
 {
+	qint32		secs;
 	QStringList	list	= string.split(":");
 	qint32		h		= list[0].toInt();
 	qint32		m		= list[1].toInt();
 	qint32		s		= list[2].toInt();
-	return(h*3600+m*60+s);
+
+	secs	= h*3600+m*60+s;
+
+	if(string[0] == "-")
+		secs	= -secs;
+
+	return(secs);
 }
 
 qint32 time2Secs(const QTime& time)