diff --git a/libs/backends/coreaudio/coreaudio_pcmio.cc b/libs/backends/coreaudio/coreaudio_pcmio.cc
index 3690d04d9a..3619064f64 100644
--- a/libs/backends/coreaudio/coreaudio_pcmio.cc
+++ b/libs/backends/coreaudio/coreaudio_pcmio.cc
@@ -17,6 +17,7 @@
  */
 
 #include <glibmm.h>
+#include "pbd/timing.h"
 #include "coreaudio_pcmio.h"
 
 using namespace ARDOUR;
@@ -795,7 +796,7 @@ CoreAudioPCM::pcm_start (
 	uint32_t device_id_in, uint32_t device_id_out,
 	uint32_t sample_rate, uint32_t samples_per_period,
 	int (process_callback (void*, const uint32_t, const uint64_t)), void *process_arg,
-	PBD::Timing& dsp_timer)
+	PBD::TimingStats& dsp_timer)
 {
 
 	assert(_device_ids);
diff --git a/libs/backends/coreaudio/coreaudio_pcmio.h b/libs/backends/coreaudio/coreaudio_pcmio.h
index 694f26c556..e53cf29670 100644
--- a/libs/backends/coreaudio/coreaudio_pcmio.h
+++ b/libs/backends/coreaudio/coreaudio_pcmio.h
@@ -81,8 +81,8 @@ public:
 			uint32_t sample_rate,
 			uint32_t samples_per_period,
 			int (process_callback (void*, const uint32_t, const uint64_t)),
-			void * process_arg
-			PBD::Timing& dsp_timer,
+			void * process_arg,
+			PBD::TimingStats& dsp_timer
 		);
 
 	void     set_error_callback (
@@ -179,7 +179,7 @@ private:
 	int (* _process_callback) (void*, const uint32_t, const uint64_t);
 	void * _process_arg;
 
-	PBD::Timing* _dsp_timer;
+	PBD::TimingStats* _dsp_timer;
 
 	void (* _error_callback) (void*);
 	void  * _error_arg;