diff --git a/src/mac/carbon/scrolbar.cpp b/src/mac/carbon/scrolbar.cpp
index bc2962811b..92ed3abb33 100644
--- a/src/mac/carbon/scrolbar.cpp
+++ b/src/mac/carbon/scrolbar.cpp
@@ -16,6 +16,7 @@
     #include "wx/log.h"
 #endif
 
+#include "wx/settings.h"
 #include "wx/scrolbar.h"
 #include "wx/mac/uma.h"