diff --git a/dlls/appwiz.cpl/addons.c b/dlls/appwiz.cpl/addons.c
index ce128fe559e..b4fcc25167f 100644
--- a/dlls/appwiz.cpl/addons.c
+++ b/dlls/appwiz.cpl/addons.c
@@ -29,7 +29,6 @@
 
 #define COBJMACROS
 #define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 
 #include "windef.h"
 #include "winbase.h"