diff --git a/core/modules/comment/comment.admin.inc b/core/modules/comment/comment.admin.inc
index 4bbff56..616d8f9 100644
--- a/core/modules/comment/comment.admin.inc
+++ b/core/modules/comment/comment.admin.inc
@@ -196,7 +196,7 @@ function comment_admin_overview_submit($form, &$form_state) {
     entity_delete_multiple('comment', $cids);
   }
   else {
-    foreach ($cids as $cid => $value) {
+    foreach ($cids as $value) {
       $comment = comment_load($value);
 
       if ($operation == 'unpublish') {