diff --git a/Source/MIKMIDISequencer.m b/Source/MIKMIDISequencer.m
index 3c9867e8..e314678c 100644
--- a/Source/MIKMIDISequencer.m
+++ b/Source/MIKMIDISequencer.m
@@ -535,6 +535,7 @@ - (void)prepareForRecordingWithPreRoll:(BOOL)includePreRoll
 - (void)recordMIDICommand:(MIKMIDICommand *)command
 {
 	if (!self.isRecording) return;
+	if (self.currentTimeStamp < 0) return; // In pre-roll
 	
 	MIDITimeStamp midiTimeStamp = command.midiTimestamp;
 	MusicTimeStamp musicTimeStamp = [self.clock musicTimeStampForMIDITimeStamp:midiTimeStamp];