diff --git a/openwrt/package/portmap/files/portmap.init b/openwrt/package/portmap/files/portmap.init
index e1ed89a60f..31a3399e93 100644
--- a/openwrt/package/portmap/files/portmap.init
+++ b/openwrt/package/portmap/files/portmap.init
@@ -9,7 +9,7 @@ case $1 in
   $BIN $OPTIONS
   ;;
  *)
-  echo "usage: $0 (start)"
+  echo "usage: $0 start"
   exit 1
 esac