diff --git a/harbour/make_vc.bat b/harbour/make_vc.bat
index 4d43b36d9d..f7643c9157 100644
--- a/harbour/make_vc.bat
+++ b/harbour/make_vc.bat
@@ -47,3 +47,4 @@ if "%OS%" == "Windows_NT" set MK_FILE=makefile.nt
    if exist make_vc.log  del make_vc.log
 
 :EXIT
+SET MK_FILE=