diff --git a/phpBB/index.php b/phpBB/index.php
index 59ec158f2f..c67fe95514 100644
--- a/phpBB/index.php
+++ b/phpBB/index.php
@@ -141,7 +141,7 @@ if($total_categories = $db->sql_numrows($q_categories))
 					AND u.user_id = p.poster_id  
 					$limit_forums
 					UNION (
-						SELECT f.*, NULL, NULL, NULL, NULL
+						SELECT f.*, NULL, NULL, NULL
 						FROM " . FORUMS_TABLE . " f
 						WHERE NOT EXISTS (
 							SELECT p.post_time
@@ -190,7 +190,7 @@ if($total_categories = $db->sql_numrows($q_categories))
 		WHERE t.forum_id = f.forum_id
 			AND p.post_id = t.topic_last_post_id
 			AND p.post_time > " . $userdata['session_last_visit'] . " 
-			AND t.topic_moved_id = NULL";
+			AND t.topic_moved_id IS NULL";
 	if(!$new_topic_ids = $db->sql_query($sql))
 	{
 		message_die(GENERAL_ERROR, "Could not query new topic information", "", __LINE__, __FILE__, $sql);