diff --git a/Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyColorCtrl.cpp b/Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyColorCtrl.cpp
index 3562c8ff11..fd6580225f 100644
--- a/Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyColorCtrl.cpp
+++ b/Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyColorCtrl.cpp
@@ -18,6 +18,7 @@ AZ_PUSH_DISABLE_WARNING(4251, "-Wunknown-warning-option")
 #include <QPainter> 
 AZ_POP_DISABLE_WARNING
 #include <QtWidgets/QToolButton>
+#include <QtGUI/QRegExpValidator>
 
 namespace AzToolsFramework
 {