diff --git a/app/views/auth_sources/index.html.erb b/app/views/auth_sources/index.html.erb
index 30d3bad7f..3ce5c090c 100644
--- a/app/views/auth_sources/index.html.erb
+++ b/app/views/auth_sources/index.html.erb
@@ -20,7 +20,7 @@
     <td align="center"><%= h source.host %></td>
     <td align="center"><%= h source.users.count %></td>
     <td class="buttons">
-      <%= link_to l(:button_test), :action => 'test_connection', :id => source %>
+      <%= link_to l(:button_test), {:action => 'test_connection', :id => source}, :class => 'icon icon-test' %>
       <%= link_to l(:button_delete), { :action => 'destroy', :id => source },
                                                         :method => :delete,
                                                         :confirm => l(:text_are_you_sure),
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 65cdb5159..f73cbc666 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -958,6 +958,7 @@ padding-bottom: 3px;
 .icon-zoom-in { background-image: url(../images/zoom_in.png); }
 .icon-zoom-out { background-image: url(../images/zoom_out.png); }
 .icon-passwd { background-image: url(../images/textfield_key.png); }
+.icon-test { background-image: url(../images/bullet_go.png); }
 
 .icon-file { background-image: url(../images/files/default.png); }
 .icon-file.text-plain { background-image: url(../images/files/text.png); }