1 files changed, 1 insertions, 1 deletions
diff --git a/gmdiff b/gmdiff
index d5b1f2a7..32688bf2 100644
--- a/gmdiff
+++ b/gmdiff
@@ -34,7 +34,7 @@ elif [ "X$1" = "X-u" ]; then
   ROFF="groff -ket -ww -Tutf8 -P -c"
   MOPT="-Werror -Tutf8 $MOPT"
 else
-  ROFF="groff -et -ww -Tascii -P -c"
+  ROFF="groff -et -ww -mtty-char -Tascii -P -c"
   MOPT="-Werror -Tascii $MOPT"
 fi