diff --git a/dlls/rpcrt4/ndr_ole.c b/dlls/rpcrt4/ndr_ole.c
index 143bba7348a..0f0b7e7df20 100644
--- a/dlls/rpcrt4/ndr_ole.c
+++ b/dlls/rpcrt4/ndr_ole.c
@@ -27,7 +27,6 @@
 
 #define COBJMACROS
 #define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 
 #include "windef.h"
 #include "winbase.h"