diff --git a/ActivitySpamPlugin.php b/ActivitySpamPlugin.php
index e497b9a744..b62401ce1b 100644
--- a/ActivitySpamPlugin.php
+++ b/ActivitySpamPlugin.php
@@ -215,6 +215,14 @@ class ActivitySpamPlugin extends Plugin
         return true;
     }
 
+    function onEndShowStyles($action)
+    {
+        $action->element('style', null,
+                         'form_train_spam input.submit { background: url("'.$this->path('icons/bullet_black.png').'") no-repeat 0px 0px } ' . "\n" .
+                         'form_train_spam input.submit { background: url("'.$this->path('icons/exclamation.png').'") no-repeat 0px 0px } ');
+        return true;
+    }
+
     function onPluginVersion(&$versions)
     {
         $versions[] = array('name' => 'ActivitySpam',
diff --git a/icons/bullet_black.png b/icons/bullet_black.png
new file mode 100644
index 0000000000..57619706d1
Binary files /dev/null and b/icons/bullet_black.png differ
diff --git a/icons/exclamation.png b/icons/exclamation.png
new file mode 100644
index 0000000000..c37bd062e6
Binary files /dev/null and b/icons/exclamation.png differ