diff --git a/app/views/watchers/_set_watcher.js.erb b/app/views/watchers/_set_watcher.js.erb
index e5cdc4f..4090ef6 100644
--- a/app/views/watchers/_set_watcher.js.erb
+++ b/app/views/watchers/_set_watcher.js.erb
@@ -1,2 +1,3 @@
 <% selector = ".#{watcher_css(watched)}" %>
 $("<%= selector %>").each(function(){$(this).replaceWith("<%= escape_javascript watcher_link(watched, user) %>")});
+$('#watchers').html('<%= escape_javascript(render(:partial => 'watchers/watchers', :locals => {:watched => watched.first})) %>');
diff --git a/app/views/watchers/_watchers.html.erb b/app/views/watchers/_watchers.html.erb
index 697d0bd..f3cb895 100644
--- a/app/views/watchers/_watchers.html.erb
+++ b/app/views/watchers/_watchers.html.erb
@@ -1,4 +1,4 @@
-<% if User.current.allowed_to?(:add_issue_watchers, @project) %>
+<% if User.current.allowed_to?(:add_issue_watchers, watched.project) %>
 <div class="contextual">
 <%= link_to l(:button_add),
       {:controller => 'watchers', :action => 'new', :object_type => watched.class.name.underscore, :object_id => watched},
diff --git a/test/ui/issues_test_ui.rb b/test/ui/issues_test_ui.rb
index dec6565..cbca9f8 100644
--- a/test/ui/issues_test_ui.rb
+++ b/test/ui/issues_test_ui.rb
@@ -227,6 +227,17 @@ class Redmine::UiTest::IssuesTest < Redmine::UiTest::Base
     assert page.first('#sidebar').has_no_content?(user.name)
   end
 
+  def test_watch_should_update_watchers_list
+    user = User.find(2)
+    log_user('jsmith', 'jsmith')
+    visit '/issues/1'
+    assert page.first('#sidebar').has_content?('Watchers (0)')
+
+    page.first('a.issue-1-watcher').click
+    assert page.first('#sidebar').has_content?('Watchers (1)')
+    assert page.first('#sidebar').has_content?(user.name)
+  end
+
   def test_watch_issue_via_context_menu
     log_user('jsmith', 'jsmith')
     visit '/issues'