diff --git a/dlls/toolhelp.dll16/toolhelp.c b/dlls/toolhelp.dll16/toolhelp.c
index 4fa1500e5ec..cf5e6ef778c 100644
--- a/dlls/toolhelp.dll16/toolhelp.c
+++ b/dlls/toolhelp.dll16/toolhelp.c
@@ -21,8 +21,6 @@
 
 #include "config.h"
 
-#define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>