diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 3603b7c8c0..06f0e8b4f2 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -5354,6 +5354,19 @@ Session::non_realtime_set_audition ()
 	assert (pending_audition_region);
 	auditioner->audition_region (pending_audition_region);
 	pending_audition_region.reset ();
+
+	/* clear any SessionEvent::Overwrite that the DR may have scheduled
+	 * due to PL modification. audition_region() will have called
+	 * overwrite_existing_buffers().
+	 *
+	 * Otherwise the event will be handled in the future by
+	 * Session::process_audition () after !non_realtime_work_pending().
+	 * This will cause the DiskReader::run_must_resolve = true, and the
+	 * Note-tracker will kill any active notes, while auditioning
+	 * is already in progress.
+	 */
+	_clear_event_type (SessionEvent::Overwrite);
+
 	AuditionActive (true); /* EMIT SIGNAL */
 }