diff --git a/kmreaderwin.cpp b/kmreaderwin.cpp
index b53703332..6ec4ada7d 100644
--- a/kmreaderwin.cpp
+++ b/kmreaderwin.cpp
@@ -2518,7 +2518,8 @@ void KMReaderWin::setHtmlOverride( bool override )
   }
 
   // keep toggle display mode action state in sync.
-  mToggleDisplayModeAction->setChecked( htmlMail() );
+  if ( mToggleDisplayModeAction )
+    mToggleDisplayModeAction->setChecked( htmlMail() );
 }
 
 //-----------------------------------------------------------------------------