diff --git a/src/gui/PianoView.cpp b/src/gui/PianoView.cpp
index 343f1a4d1..024d79e2a 100644
--- a/src/gui/PianoView.cpp
+++ b/src/gui/PianoView.cpp
@@ -1,9 +1,8 @@
 /*
- * Piano.cpp - implementation of piano-widget used in instrument-track-window
- *             for testing + according model class
+ * PianoView.cpp - implementation of piano widget used in instrument-track-window
  *
  * Copyright (c) 2004-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
- * 
+ *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
  * This program is free software; you can redistribute it and/or
@@ -23,7 +22,7 @@
  *
  */
 
-/** \file piano.cpp
+/** \file PianoView.cpp
  *  \brief A piano keyboard to play notes on in the instrument plugin window.
  */
 
@@ -723,6 +722,9 @@ void PianoView::focusOutEvent( QFocusEvent * )
 			m_piano->m_pressedKeys[i] = false;
 		}
 	}
+
+	m_piano->m_instrumentTrack->silenceAllNotes();
+
 	update();
 }