diff --git a/src/core/midi/MidiController.cpp b/src/core/midi/MidiController.cpp
index 89e5657f9a1..4c15f7c8a20 100644
--- a/src/core/midi/MidiController.cpp
+++ b/src/core/midi/MidiController.cpp
@@ -39,7 +39,8 @@ MidiController::MidiController( Model * _parent ) :
 	MidiEventProcessor(),
 	m_midiPort( tr( "unnamed_midi_controller" ),
 			Engine::mixer()->midiClient(), this, this, MidiPort::Input ),
-	m_lastValue( 0.0f )
+	m_lastValue( 0.0f ),
+	m_previousValue( 0.0f )
 {
 	setSampleExact( true );
 	connect( &m_midiPort, SIGNAL( modeChanged() ),