diff --git a/wp-comments.php b/wp-comments.php
index 4fbbaa32cd..b04178d8a9 100644
--- a/wp-comments.php
+++ b/wp-comments.php
@@ -14,7 +14,7 @@
         $comment_author_email = (isset($HTTP_COOKIE_VARS['comment_author_email_'.$cookiehash])) ? trim($HTTP_COOKIE_VARS['comment_author_email_'.$cookiehash]) : '';
  		$comment_author_url = (isset($HTTP_COOKIE_VARS['comment_author_url_'.$cookiehash])) ? trim($HTTP_COOKIE_VARS['comment_author_url_'.$cookiehash]) : '';
 
-        $comments = $wpdb->get_results("SELECT * FROM $tablecomments WHERE comment_post_ID = $id AND comment_approved = '1' ORDER BY comment_date");
+        $comments = $wpdb->get_results("SELECT * FROM $tablecomments WHERE comment_post_ID = '$id' AND comment_approved = '1' ORDER BY comment_date");
 ?>
 
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