diff --git a/src/mac/carbon/sound.cpp b/src/mac/carbon/sound.cpp
index 1911d62d7f..2aa657b7a0 100644
--- a/src/mac/carbon/sound.cpp
+++ b/src/mac/carbon/sound.cpp
@@ -19,6 +19,7 @@
 #include "wx/file.h"
 #include "wx/sound.h"
 #include "wx/timer.h"
+#include "wx/intl.h"
 
 #if wxUSE_SOUND