diff --git a/include/wx/vector.h b/include/wx/vector.h
index ab07ca0f4a..78a91b8dfe 100644
--- a/include/wx/vector.h
+++ b/include/wx/vector.h
@@ -13,6 +13,7 @@
 #define _WX_VECTOR_H_
 
 #include "wx/defs.h"
+#include "wx/dataobj.h"
 
 #if wxUSE_STL