diff --git a/modules/comment/comment.module b/modules/comment/comment.module
index 46115be..79ee85d 100644
--- a/modules/comment/comment.module
+++ b/modules/comment/comment.module
@@ -2615,8 +2615,9 @@ function comment_unpublish_action($comment, $context = array()) {
  * @see comment_unpublish_by_keyword_action_submit()
  */
 function comment_unpublish_by_keyword_action($comment, $context) {
+  $build = comment_view($comment);
+  $text = drupal_render($build);
   foreach ($context['keywords'] as $keyword) {
-    $text = drupal_render($comment);
     if (strpos($text, $keyword) !== FALSE) {
       $comment->status = COMMENT_NOT_PUBLISHED;
       watchdog('action', 'Unpublished comment %subject.', array('%subject' => $comment->subject));
diff --git a/modules/comment/comment.test b/modules/comment/comment.test
index 30bff71..424d64c 100644
--- a/modules/comment/comment.test
+++ b/modules/comment/comment.test
@@ -13,7 +13,7 @@ class CommentHelperCase extends DrupalWebTestCase {
   function setUp() {
     parent::setUp('comment', 'search');
     // Create users and test node.
-    $this->admin_user = $this->drupalCreateUser(array('administer content types', 'administer comments', 'administer blocks'));
+    $this->admin_user = $this->drupalCreateUser(array('administer content types', 'administer comments', 'administer blocks', 'administer actions'));
     $this->web_user = $this->drupalCreateUser(array('access comments', 'post comments', 'create article content', 'edit own comments'));
     $this->node = $this->drupalCreateNode(array('type' => 'article', 'promote' => 1, 'uid' => $this->web_user->uid));
   }
@@ -1974,6 +1974,34 @@ class CommentActionsTestCase extends CommentHelperCase {
   }
 
   /**
+   * Tests the unpublish comment by keyword action.
+   */
+  function testCommentUnpublishByKeyword() {
+    $this->drupalLogin($this->admin_user);
+    $callback = 'comment_unpublish_by_keyword_action';
+    $hash = drupal_hash_base64($callback);
+    $keyword = $this->randomName();
+    $edit = array(
+      'actions_label' => $callback,
+      'keywords' => $keyword,
+    );
+    $this->drupalPost("admin/config/system/actions/configure/$hash", $edit, t('Save'));
+
+    $action = db_query("SELECT aid, type, callback, parameters, label FROM {actions} WHERE callback = :callback", array(':callback' => $callback))->fetchObject();
+    $this->assertTrue($action, 'The action could be loaded.');
+
+    $comment = $this->postComment($this->node, $keyword, $this->randomName());
+
+    // Load the full comment so that status is available.
+    $comment = comment_load($comment->id);
+
+    $this->assertTrue($comment->status == COMMENT_PUBLISHED, 'The comment status was set to published.');
+
+    comment_unpublish_by_keyword_action($comment, array('keywords' => array($keyword)));
+    $this->assertTrue($comment->status == COMMENT_NOT_PUBLISHED, 'The comment status was set to not published.');
+  }
+
+  /**
    * Verify that a watchdog message has been entered.
    *
    * @param $watchdog_message