diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 69a90b619e..e1e4bf6770 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -247,13 +247,14 @@ class UsersController < ApplicationController
         format.js {
           render(:update) {|page|
             page.replace_html "tab-content-memberships", :partial => 'users/memberships'
+            page.insert_html :top, "tab-content-memberships", :partial => "members/common_notice", :locals => {:message => l(:notice_successful_update)}
             page.visual_effect(:highlight, "member-#{@membership.id}")
           }
         }
       else
         format.js {
           render(:update) {|page|
-            page.alert(l(:notice_failed_to_save_members, :errors => @membership.errors.full_messages.join(', ')))
+            page.insert_html :top, "tab-content-memberships", :partial => "members/member_errors", :locals => {:member => @membership}
           }
         }
       end
@@ -295,7 +296,12 @@ class UsersController < ApplicationController
     end
     respond_to do |format|
       format.html { redirect_to :controller => '/users', :action => 'edit', :id => @user, :tab => 'memberships' }
-      format.js { render(:update) {|page| page.replace_html "tab-content-memberships", :partial => 'users/memberships'} }
+      format.js {
+        render(:update) { |page|
+          page.replace_html "tab-content-memberships", :partial => 'users/memberships'
+          page.insert_html :top, "tab-content-memberships", :partial => "members/common_notice", :locals => {:message => l(:notice_successful_delete)}
+        }
+      }
     end
   end
 
diff --git a/app/views/members/_common_notice.html.erb b/app/views/members/_common_notice.html.erb
new file mode 100644
index 0000000000..2cd57545d5
--- /dev/null
+++ b/app/views/members/_common_notice.html.erb
@@ -0,0 +1,38 @@
+<%#-- copyright
+OpenProject is a project management system.
+Copyright (C) 2012-2014 the OpenProject Foundation (OPF)
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License version 3.
+
+OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+Copyright (C) 2006-2013 Jean-Philippe Lang
+Copyright (C) 2010-2013 the ChiliProject Team
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+See doc/COPYRIGHT.rdoc for more details.
+
+++#%>
+
+<div class="flash notice">
+  <ul>
+    <li>
+      <a  href="#">
+        <%= h message %>
+      </a>
+    </li>
+  <ul>
+</div>
diff --git a/app/views/users/_memberships.html.erb b/app/views/users/_memberships.html.erb
index c88a5b9b1f..2a15880440 100644
--- a/app/views/users/_memberships.html.erb
+++ b/app/views/users/_memberships.html.erb
@@ -29,6 +29,7 @@ See doc/COPYRIGHT.rdoc for more details.
 
 <% roles = Role.find_all_givable %>
 <% projects = Project.active.find(:all, :order => 'lft') %>
+<%= javascript_include_tag "activate_error_messages" %>
 
 <div class="splitcontentleft">
 <% if @user.memberships.any? %>