diff --git a/libs/ardour/ardour/cycles.h b/libs/ardour/ardour/cycles.h
index f194988da9..ad3e512669 100644
--- a/libs/ardour/ardour/cycles.h
+++ b/libs/ardour/ardour/cycles.h
@@ -186,8 +186,19 @@ static inline cycles_t get_cycles (void)
 
 /* begin mach */
 #elif defined(__APPLE__)
-#include <CoreAudio/CoreAudioTypes.h>
+
+#ifdef HAVE_COREAUDIO
 #include <CoreAudio/HostTime.h>
+#else // Due to MacTypes.h and libgnomecanvasmm Rect conflict
+typedef unsigned long long              UInt64;
+
+extern UInt64
+AudioGetCurrentHostTime();
+
+extern UInt64
+AudioConvertHostTimeToNanos(UInt64 inHostTime);
+#endif
+
 typedef UInt64 cycles_t;
 static inline cycles_t get_cycles (void)
 {