diff --git a/src/osx/carbon/sound.cpp b/src/osx/carbon/sound.cpp
index 7414db493c..2fff63dfcf 100644
--- a/src/osx/carbon/sound.cpp
+++ b/src/osx/carbon/sound.cpp
@@ -52,6 +52,10 @@
 #endif
 #endif
 
+#if __WXOSX_COCOA__
+#include "wx/osx/private.h"
+#endif
+
 #include <Carbon/Carbon.h>
 
 //quicktime media layer only required for mac emulation on pc