diff --git a/src/redis-trib.rb b/src/redis-trib.rb
index c343dd6e7..d4a0d6fe5 100755
--- a/src/redis-trib.rb
+++ b/src/redis-trib.rb
@@ -847,7 +847,7 @@ class RedisTrib
         node.r.shutdown
     end
 
-    def help_cluster_cmd(opt)
+    def help_cluster_cmd(argv,opt)
         show_help
         exit 0
     end