diff --git a/vmcreate1.sh b/vmcreate1.sh
index 87414de..fae3570 100644
--- a/vmcreate1.sh
+++ b/vmcreate1.sh
@@ -41,7 +41,7 @@ while getopts "a:f:h" opt; do
         p) password="$OPTARG";;
         d) size="$OPTARG";;
         t) tag="$OPTARG";;
-        *) echo "Invalid option. Use `-h` for help."
+        *) echo "Invalid option. Use `-h` for help."; exit 1;;
 	esac
 done