diff --git a/src/mac/carbon/overlay.cpp b/src/mac/carbon/overlay.cpp
index e1bb6db9b9..62ca692d16 100644
--- a/src/mac/carbon/overlay.cpp
+++ b/src/mac/carbon/overlay.cpp
@@ -26,6 +26,7 @@
 
 #include "wx/overlay.h"
 #include "wx/private/overlay.h"
+#include "wx/dcclient.h"
 
 #if wxHAS_NATIVE_OVERLAY