diff --git a/app/code/core/Mage/Catalog/Helper/Category/Url/Rewrite.php b/app/code/core/Mage/Catalog/Helper/Category/Url/Rewrite.php
index 24f6a51ed78..0d874687150 100644
--- a/app/code/core/Mage/Catalog/Helper/Category/Url/Rewrite.php
+++ b/app/code/core/Mage/Catalog/Helper/Category/Url/Rewrite.php
@@ -75,6 +75,7 @@ public function joinTableToEavCollection(Mage_Eav_Model_Entity_Collection_Abstra
             array('request_path'),
             "{{table}}.is_system=1 AND " .
                 "{{table}}.store_id='{$storeId}' AND " .
+                "{{table}}.category_id IS NOT NULL AND " .
                 "{{table}}.id_path LIKE 'category/%'",
             'left'
         );
@@ -94,6 +95,7 @@ public function joinTableToCollection(Mage_Catalog_Model_Resource_Category_Flat_
             array('url_rewrite' => $collection->getTable('core/url_rewrite')),
             'url_rewrite.category_id = main_table.entity_id AND url_rewrite.is_system = 1 '.
                 ' AND ' . $collection->getConnection()->quoteInto('url_rewrite.store_id = ?', $storeId).
+                ' AND url_rewrite.category_id IS NOT NULL'.
                 ' AND ' . $collection->getConnection()->quoteInto('url_rewrite.id_path LIKE ?', 'category/%'),
             array('request_path')
         );
@@ -114,6 +116,7 @@ public function joinTableToSelect(Varien_Db_Select $select, $storeId)
             'url_rewrite.category_id=main_table.entity_id AND url_rewrite.is_system=1 AND ' .
                 $this->_connection->quoteInto('url_rewrite.store_id = ? AND ',
                     (int)$storeId) .
+                'url_rewrite.category_id IS NOT NULL AND '.
                 $this->_connection->prepareSqlCondition('url_rewrite.id_path', array('like' => 'category/%')),
             array('request_path' => 'url_rewrite.request_path'));
         return $this;