diff --git a/Gems/Atom/Tools/MaterialEditor/Code/Source/MaterialEditorApplication.h b/Gems/Atom/Tools/MaterialEditor/Code/Source/MaterialEditorApplication.h
index 337bef47ec..e309a56304 100644
--- a/Gems/Atom/Tools/MaterialEditor/Code/Source/MaterialEditorApplication.h
+++ b/Gems/Atom/Tools/MaterialEditor/Code/Source/MaterialEditorApplication.h
@@ -116,6 +116,8 @@ namespace MaterialEditor
             AZStd::string message;
         };
 
+        AZStd::vector<LogMessage> m_startupLogSink;
+        AZStd::unique_ptr<AzFramework::LogFile> m_logFile;
 
         //! Local user settings are used to store material browser tree expansion state
         AZ::UserSettingsProvider m_localUserSettings;