diff --git a/contrib/include/wx/fl/controlbar.h b/contrib/include/wx/fl/controlbar.h
index df10caf547..5db92bd6da 100644
--- a/contrib/include/wx/fl/controlbar.h
+++ b/contrib/include/wx/fl/controlbar.h
@@ -19,6 +19,7 @@
 
 #include "wx/defs.h"
 #include "wx/string.h"
+#include "wx/pen.h"
 #include "wx/window.h"
 #include "wx/dynarray.h"
 #include "wx/fl/fldefs.h"