diff --git a/reactos/dll/win32/shimgvw/shimgvw.c b/reactos/dll/win32/shimgvw/shimgvw.c
index 4765b865c88..d0afd8f979a 100644
--- a/reactos/dll/win32/shimgvw/shimgvw.c
+++ b/reactos/dll/win32/shimgvw/shimgvw.c
@@ -17,6 +17,8 @@
 #include <commctrl.h>
 #include <gdiplus.h>
 #include <tchar.h>
+
+#define NDEBUG
 #include <debug.h>
 
 #include "shimgvw.h"