diff --git a/programs/oleview/oleview.c b/programs/oleview/oleview.c
index 3a379b43442..69f4f9e7a0d 100644
--- a/programs/oleview/oleview.c
+++ b/programs/oleview/oleview.c
@@ -422,7 +422,7 @@ static int MenuCommand(WPARAM wParam, HWND hWnd)
             LoadStringW(globals.hMainInst, IDS_OPEN, wszTitle, sizeof(wszTitle)/sizeof(wszTitle[0]));
             LoadStringW(globals.hMainInst, IDS_OPEN_FILTER_TYPELIB, filter_typelib, sizeof(filter_typelib)/sizeof(WCHAR));
             LoadStringW(globals.hMainInst, IDS_OPEN_FILTER_ALL, filter_all, sizeof(filter_all)/sizeof(WCHAR));
-            snprintfW( filter, MAX_PATH, filterW, filter_typelib, 0, 0, filter_all, 0, 0 );
+            wsprintfW( filter, filterW, filter_typelib, 0, 0, filter_all, 0, 0 );
             InitOpenFileName(hWnd, &ofn, filter, wszTitle, wszName);
             if(GetOpenFileNameW(&ofn)) CreateTypeLibWindow(globals.hMainInst, wszName);
             break;
diff --git a/programs/oleview/typelib.c b/programs/oleview/typelib.c
index 21e9d963a4a..d07dd3c8c2f 100644
--- a/programs/oleview/typelib.c
+++ b/programs/oleview/typelib.c
@@ -18,6 +18,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#define NONAMELESSUNION
+
 #include "main.h"
 
 #include "wine/debug.h"