diff --git a/app/controllers/watchers_controller.rb b/app/controllers/watchers_controller.rb
index 44bb27443..0a427801c 100644
--- a/app/controllers/watchers_controller.rb
+++ b/app/controllers/watchers_controller.rb
@@ -72,7 +72,9 @@ class WatchersController < ApplicationController
         format.js do
           render :update do |page|
             users.each do |user|
-              page.select("#issue_watcher_user_ids_#{user.id}").each(&:remove)
+              page.select("#issue_watcher_user_ids_#{user.id}").each do |item|
+                page.remove item
+              end
             end
             page.insert_html :bottom, 'watchers_inputs', :text => watchers_checkboxes(nil, users, true)
           end