diff --git a/dlls/ole2.dll16/memlockbytes.c b/dlls/ole2.dll16/memlockbytes.c
index 80153dfc230..93f91bc9ce4 100644
--- a/dlls/ole2.dll16/memlockbytes.c
+++ b/dlls/ole2.dll16/memlockbytes.c
@@ -25,7 +25,7 @@
 #include <string.h>
 
 #define NONAMELESSUNION
-#define NONAMELESSSTRUCT
+
 #include "windef.h"
 #include "winbase.h"
 #include "wine/winbase16.h"
diff --git a/dlls/ole2.dll16/ole2.c b/dlls/ole2.dll16/ole2.c
index 3a271322cf5..0052142ef71 100644
--- a/dlls/ole2.dll16/ole2.c
+++ b/dlls/ole2.dll16/ole2.c
@@ -29,8 +29,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"