diff --git a/configure_NAT_from_RULES b/configure_NAT_from_RULES
index 66aa34f..a1df35c 100755
--- a/configure_NAT_from_RULES
+++ b/configure_NAT_from_RULES
@@ -87,6 +87,7 @@ case "$action" in
         echo "Invalid action. Use 'up' or 'down'."
         exit 1
         ;;
+esac
 
 firewall-cmd --reload > /dev/null