diff --git a/source/app/QualityMeasurementSidebar.cpp b/source/app/QualityMeasurementSidebar.cpp
index 0797662..d32ea6a 100644
--- a/source/app/QualityMeasurementSidebar.cpp
+++ b/source/app/QualityMeasurementSidebar.cpp
@@ -118,7 +118,16 @@ Void QualityMeasurementSidebar::updateSubWindowList()
   }
   m_comboBoxRef->clear();
   m_comboBoxRef->insertItems( 0, m_pcWindowListNames );
+
   m_comboBoxRef->setCurrentIndex( -1 );
+  if( m_pcCurrentSubWindow )
+  {
+    if( SubWindowHandle* refSubWindow = m_pcCurrentSubWindow->getRefSubWindow() )
+    {
+      Int index = m_pcWindowListNames.contains( refSubWindow->getWindowName() );
+      m_comboBoxRef->setCurrentIndex( index );
+    }
+  }
 }
 
 Void QualityMeasurementSidebar::updateCurrentWindow( SubWindowHandle *subWindow )
@@ -134,6 +143,9 @@ Void QualityMeasurementSidebar::updateSidebarData()
   {
     if( SubWindowHandle* refSubWindow = m_pcCurrentSubWindow->getRefSubWindow() )
     {
+      Int index = m_pcWindowListNames.contains( refSubWindow->getWindowName() );
+      m_comboBoxRef->setCurrentIndex( index );
+
       PlaYUVerFrame* currFrame = m_pcCurrentSubWindow->getCurrFrame();
       PlaYUVerFrame* refFrame = refSubWindow->getCurrFrame();
       Double quality;
@@ -155,10 +167,9 @@ Void QualityMeasurementSidebar::updateSidebarData()
 
 Void QualityMeasurementSidebar::slotReferenceChanged( Int index )
 {
-  SubWindowHandle *subWindow;
   if( index > -1 && m_pcCurrentSubWindow )
   {
-    subWindow = qobject_cast<SubWindowHandle *>( m_pcMainWindowMdiArea->subWindowList().at( index ) );
+    SubWindowHandle *subWindow = qobject_cast<SubWindowHandle *>( m_pcMainWindowMdiArea->subWindowList().at( index ) );
     if( subWindow )
     {
       if( m_pcCurrentSubWindow->getCurrFrame()->haveSameFmt( subWindow->getCurrFrame() ) )
diff --git a/source/app/plaYUVerApp.cpp b/source/app/plaYUVerApp.cpp
index ca94ae9..2f11728 100644
--- a/source/app/plaYUVerApp.cpp
+++ b/source/app/plaYUVerApp.cpp
@@ -624,6 +624,7 @@ Void plaYUVerApp::seekEvent( Int direction )
     {
       m_pcCurrentSubWindow->seekRelativeEvent( direction > 0 ? true : false );
     }
+    m_pcQualityMeasurement->updateSidebarData();
     updateFrameProperties();
     updateCurrFrameNum();
   }
@@ -644,6 +645,7 @@ Void plaYUVerApp::seekSliderEvent( Int new_frame_num )
     {
       m_pcCurrentSubWindow->seekAbsoluteEvent( ( UInt )new_frame_num );
     }
+    m_pcQualityMeasurement->updateSidebarData();
     updateFrameProperties();
     updateCurrFrameNum();
   }