diff --git a/mixer/src/Mixer.C b/mixer/src/Mixer.C
index fd7130f..2e86ea3 100644
--- a/mixer/src/Mixer.C
+++ b/mixer/src/Mixer.C
@@ -361,7 +361,8 @@ void Mixer::remove ( Mixer_Strip *ms )
 
     mixer_strips->remove( ms );
 
-    parent()->redraw();
+    if ( parent() )
+        parent()->redraw();
 }
 
 bool