diff --git a/include/wx/os2/dnd.h b/include/wx/os2/dnd.h
index ec8277545c..a92c744745 100644
--- a/include/wx/os2/dnd.h
+++ b/include/wx/os2/dnd.h
@@ -19,7 +19,9 @@
 
 #define INCL_WINSTDDRAG
 #include <os2.h>
+#ifndef __EMX__
 #include <pmstddlg.h>
+#endif
 
 //-------------------------------------------------------------------------
 // wxDropSource