diff --git a/src/gui/editors/PianoRoll.cpp b/src/gui/editors/PianoRoll.cpp
index 9b65c684798..1a8ea2538ef 100644
--- a/src/gui/editors/PianoRoll.cpp
+++ b/src/gui/editors/PianoRoll.cpp
@@ -1670,10 +1670,10 @@ void PianoRoll::mousePressEvent(QMouseEvent * me )
 			// clicked on keyboard on the left
 			if( me->buttons() == Qt::RightButton )
 			{
-				// right click, tone marker contextual menu
+				// right click - tone marker contextual menu
 				m_semiToneMarkerMenu->popup( mapToGlobal( QPoint( me->x(), me->y() ) ) );
 			}
-			else
+			else if( me->buttons() == Qt::LeftButton )
 			{
 				// left click - play the note
 				int v = ( (float) x ) / ( (float) WHITE_KEY_WIDTH ) * MidiDefaultVelocity;