diff --git a/include/wx/generic/buttonbar.h b/include/wx/generic/buttonbar.h
index 1cb9d63a7f..7d339e6eae 100644
--- a/include/wx/generic/buttonbar.h
+++ b/include/wx/generic/buttonbar.h
@@ -14,6 +14,7 @@
 #define _WX_BUTTONBAR_H_
 
 #include "wx/bmpbuttn.h"
+#include "wx/toolbar.h"
 
 class WXDLLEXPORT wxButtonToolBarTool;