diff --git a/src/Make_cyg_ming.mak b/src/Make_cyg_ming.mak
index f9c795b..f89d8dd 100644
--- a/src/Make_cyg_ming.mak
+++ b/src/Make_cyg_ming.mak
@@ -1085,7 +1085,7 @@
 # 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
 
 ###########################################################################
 INCL =	vim.h alloc.h ascii.h ex_cmds.h feature.h globals.h \