diff --git a/source/app/SubWindowHandle.cpp b/source/app/SubWindowHandle.cpp
index 5adec30..e51fefa 100644
--- a/source/app/SubWindowHandle.cpp
+++ b/source/app/SubWindowHandle.cpp
@@ -130,6 +130,7 @@ Void SubWindowHandle::disableModule()
   if( !m_pcCurrentModule )
     return;
 
+  m_pcCurrentModule->m_pcAction->setCheckable(false);
   m_pcCurrentModule->destroy();
   m_pcCurrentModule = NULL;
   refreshFrame();
diff --git a/source/app/plaYUVerApp.cpp b/source/app/plaYUVerApp.cpp
index eadd956..ec82c49 100644
--- a/source/app/plaYUVerApp.cpp
+++ b/source/app/plaYUVerApp.cpp
@@ -544,7 +544,9 @@ void plaYUVerApp::chageSubWindowSelection()
   if( activeSubWindow() )
   {
     if( m_pcCurrentSubWindow )
+    {
       m_pcCurrentSubWindow->disableModule();
+    }
 //    if( m_acPlayingSubWindows.size() < 2 )
 //    {
 //      playingTimer->stop();