diff --git a/include/wx/defs.h b/include/wx/defs.h
index dabe34b326..0924a27fdb 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -863,5 +863,8 @@ typedef int (*WXFARPROC)();
 
 #endif
 
+// for drag & drop and clipboard operations
+typedef unsigned short wxDataFormat;
+
 #endif
     // __WXDEFSH__