diff --git a/gtk2_ardour/midi_tracer.cc b/gtk2_ardour/midi_tracer.cc
index 516d5c8717..0153b6414e 100644
--- a/gtk2_ardour/midi_tracer.cc
+++ b/gtk2_ardour/midi_tracer.cc
@@ -384,6 +384,9 @@ MidiTracer::tracer (Parser&, MIDI::byte* msg, size_t len, samplecnt_t now)
 			case 0xf8:
 				s += snprintf (&buf[s], bufsize, "%16s\n", "Clock");
 				break;
+			case 0xf9:
+				s += snprintf (&buf[s], bufsize, "%16s\n", "Tick");
+				break;
 			case 0xfa:
 				s += snprintf (&buf[s], bufsize, "%16s\n", "Start");
 				break;