diff --git a/modules/document/document.model.php b/modules/document/document.model.php
index f638192c7..a4cf03e58 100644
--- a/modules/document/document.model.php
+++ b/modules/document/document.model.php
@@ -157,7 +157,7 @@
         	// cache controll
 			$oCacheHandler = &CacheHandler::getInstance('object');
 			if($oCacheHandler->isSupport()){
-				$object_key = 'object:'.$obj->module_srl.'_category_srl:'.$obj->category_srl.'_list_count:'.$obj->list_count.'_search_target:'.$obj->search_target.'_search_keyword:'.$obj->search_keyword.'_page'.$obj->page.'_sort_index:'.$obj->sort_index;
+				$object_key = 'object:'.$obj->module_srl.'_category_srl:'.$obj->category_srl.'_list_count:'.$obj->list_count.'_search_target:'.$obj->search_target.'_search_keyword:'.$obj->search_keyword.'_page'.$obj->page.'_sort_index:'.$obj->sort_index.'_order_type:'.$obj->order_type;
 				$cache_key = $oCacheHandler->getGroupKey('documentList', $object_key);
                                 $output = $oCacheHandler->get($cache_key);
 			}