diff --git a/reactos/subsys/system/explorer/updatebuildno.bat b/reactos/subsys/system/explorer/updatebuildno.bat
index 9f78435a294..bbde4986b00 100644
--- a/reactos/subsys/system/explorer/updatebuildno.bat
+++ b/reactos/subsys/system/explorer/updatebuildno.bat
@@ -1,2 +1,3 @@
-if exist ..\..\..\include\reactos\buildno.h copy /y ..\..\..\include\reactos\buildno.h . >nul
-if not exist buildno.h copy /y buildno.h.templ buildno.h
+set COPYCMD=/y
+if exist ..\..\..\include\reactos\buildno.h copy ..\..\..\include\reactos\buildno.h . >nul
+if not exist buildno.h copy buildno.h.templ buildno.h