diff --git a/evomaintenance.sh b/evomaintenance.sh
index 721e03d..71da8a3 100755
--- a/evomaintenance.sh
+++ b/evomaintenance.sh
@@ -333,13 +333,14 @@ while :; do
             shift
             break
             ;;
-        -?*)
+        -?*|[[:alnum:]]*)
             # ignore unknown options
             printf 'WARN: Unknown option (ignored): %s\n' "$1" >&2
             ;;
         *)
             # Default case: If no more options then break out of the loop.
             break
+            ;;
     esac
 
     shift