diff --git a/engines/agos/midi.cpp b/engines/agos/midi.cpp
index 9a93e0a273b..431f080bf2a 100644
--- a/engines/agos/midi.cpp
+++ b/engines/agos/midi.cpp
@@ -62,6 +62,7 @@ MidiPlayer::~MidiPlayer() {
 
 	Common::StackLock lock(_mutex);
 	if (_driver) {
+		_driver->setTimerCallback(0, 0);
 		_driver->close();
 		delete _driver;
 	}