diff --git a/ApplicationCode/UserInterface/RiuMainWindowBase.cpp b/ApplicationCode/UserInterface/RiuMainWindowBase.cpp
index 21c00c655d..e0620a9ddb 100644
--- a/ApplicationCode/UserInterface/RiuMainWindowBase.cpp
+++ b/ApplicationCode/UserInterface/RiuMainWindowBase.cpp
@@ -313,17 +313,6 @@ void RiuMainWindowBase::removeViewerFromMdiArea( QMdiArea* mdiArea, QWidget* vie
     }
 }
 
-//--------------------------------------------------------------------------------------------------
-///
-//--------------------------------------------------------------------------------------------------
-caf::UiStyleSheet RiuMainWindowBase::createStyleSheet()
-{
-    caf::UiStyleSheet styleSheet;
-    styleSheet.set( "background-color", QColor( Qt::lightGray ).name() );
-    styleSheet.set( "border", "1px dashed black" );
-    return styleSheet;
-}
-
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
diff --git a/ApplicationCode/UserInterface/RiuMainWindowBase.h b/ApplicationCode/UserInterface/RiuMainWindowBase.h
index 2907abe6a6..43da2cf7e3 100644
--- a/ApplicationCode/UserInterface/RiuMainWindowBase.h
+++ b/ApplicationCode/UserInterface/RiuMainWindowBase.h
@@ -85,8 +85,7 @@ public:
     bool isBlockingViewSelectionOnSubWindowActivated() const;
 
 protected:
-    void              removeViewerFromMdiArea( QMdiArea* mdiArea, QWidget* viewer );
-    caf::UiStyleSheet createStyleSheet();
+    void removeViewerFromMdiArea( QMdiArea* mdiArea, QWidget* viewer );
 
 protected slots:
     void slotDockWidgetToggleViewActionTriggered();