diff --git a/src/generic/splitter.cpp b/src/generic/splitter.cpp
index bbdaad1e6a..93eb320d0a 100644
--- a/src/generic/splitter.cpp
+++ b/src/generic/splitter.cpp
@@ -36,6 +36,10 @@
     #include "wx/settings.h"
 #endif
 
+#ifdef __WXMAC__
+    #include "wx/mac/private.h"
+#endif
+
 #include "wx/renderer.h"
 
 #include "wx/splitter.h"