diff --git a/include/ddeml.h b/include/ddeml.h
index 8605c17961c..b5c16d833de 100644
--- a/include/ddeml.h
+++ b/include/ddeml.h
@@ -206,10 +206,10 @@ extern "C" {
 
 
 
-typedef DWORD HCONVLIST;
-typedef DWORD HCONV;
-typedef DWORD HSZ;
-typedef DWORD HDDEDATA;
+DECLARE_HANDLE(HCONVLIST);
+DECLARE_HANDLE(HCONV);
+DECLARE_HANDLE(HSZ);
+DECLARE_HANDLE(HDDEDATA);