diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index eb71296..5704eac 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1417,7 +1417,7 @@
 # If this fails because you don't have Vim yet, first build and install Vim
 # without changes.
 cmdidxs: ex_cmds.h
-	vim --clean -X -u create_cmdidxs.vim
+	vim --clean -X --not-a-term -u create_cmdidxs.vim
 
 test:
 	cd testdir