diff --git a/reactos/subsys/system/cmd/precomp.h b/reactos/subsys/system/cmd/precomp.h
index 873256ba868..3fd7e6b22df 100644
--- a/reactos/subsys/system/cmd/precomp.h
+++ b/reactos/subsys/system/cmd/precomp.h
@@ -1,5 +1,6 @@
 #ifdef _MSC_VER
 #pragma warning ( disable : 4103 ) /* use #pragma pack to change alignment */
+#undef _CRT_SECURE_NO_DEPRECATE
 #define _CRT_SECURE_NO_DEPRECATE
 #endif//_MSC_VER