diff --git a/includes/webform.submissions.inc b/includes/webform.submissions.inc
index 4ebf1d9..a083e47 100644
--- a/includes/webform.submissions.inc
+++ b/includes/webform.submissions.inc
@@ -833,6 +833,7 @@
 
   // Retrieve submission data for this IP address or username from the database.
   $query = db_select('webform_submissions')
+    ->addTag('webform_submission_user_limit_check')
     ->condition('nid', $node->nid)
     ->condition('is_draft', 0);
 
@@ -900,6 +901,7 @@
 
   // Retrieve submission data from the database.
   $query = db_select('webform_submissions')
+    ->addTag('webform_submission_total_limit_check')
     ->condition('nid', $node->nid)
     ->condition('is_draft', 0);