diff --git a/townandmail.sh b/townandmail.sh
index bd34d60..fad4965 100755
--- a/townandmail.sh
+++ b/townandmail.sh
@@ -109,6 +109,7 @@ while getopts dghi:km:o:v opt ; do
         m) MIT_MAIL="$OPTARG";;
         o) OUTPUT="$OPTARG";;
         v) VERBOSITY=1;;
+	*) usage_and_exit 0;;
     esac
 done
 if [ "$NEW_GS" -eq 1 ] ; then