diff --git a/libs/ardour/disk_reader.cc b/libs/ardour/disk_reader.cc
index ecb3731262..aef4c13724 100644
--- a/libs/ardour/disk_reader.cc
+++ b/libs/ardour/disk_reader.cc
@@ -468,7 +468,7 @@ midi:
 
 	/* MIDI data handling */
 
-	const bool no_playlist_modification_pending = !(_pending_overwrite.load () & PlaylistModified);
+	const bool no_playlist_modification_pending = 0 == (_pending_overwrite.load () & PlaylistModified);
 
 	if (bufs.count ().n_midi ()) {
 		MidiBuffer& dst (bufs.get_midi (0));