diff --git a/lib/mix/tasks/unsubscribe_user.ex b/lib/mix/tasks/unsubscribe_user.ex
index 75811374b..fe4f7d479 100644
--- a/lib/mix/tasks/unsubscribe_user.ex
+++ b/lib/mix/tasks/unsubscribe_user.ex
@@ -10,7 +10,6 @@ defmodule Mix.Tasks.UnsubscribeUser do
 
   Example: ``mix unsubscribe_user lain``
   """
-  def run([nickname]) do
   def run([nickname]) do
     Mix.Task.run("app.start")