diff --git a/modules/comment/comment.controller.php b/modules/comment/comment.controller.php
index e1e9a12b0..6fea08053 100644
--- a/modules/comment/comment.controller.php
+++ b/modules/comment/comment.controller.php
@@ -244,8 +244,6 @@
             $oCacheHandler = &CacheHandler::getInstance('object');
             if($oCacheHandler->isSupport())
             {
-            	$cache_key_newest = 'object_newest_comment_list:'.$obj->module_srl;
-                $oCacheHandler->delete($cache_key_newest);
                 $oCacheHandler->invalidateGroupKey('commentList');
             }
             return $output;
@@ -328,8 +326,6 @@
             $oCacheHandler = &CacheHandler::getInstance('object');
             if($oCacheHandler->isSupport())
             {
-            	$cache_key_newest = 'object_newest_comment_list:'.$obj->module_srl;
-                $oCacheHandler->delete($cache_key_newest);
                 $oCacheHandler->invalidateGroupKey('commentList');
             }
             return $output;
diff --git a/modules/comment/comment.model.php b/modules/comment/comment.model.php
index 37210d919..940d9cd5d 100644
--- a/modules/comment/comment.model.php
+++ b/modules/comment/comment.model.php
@@ -189,7 +189,8 @@
         	// cache controll
 			$oCacheHandler = &CacheHandler::getInstance('object');
 			if($oCacheHandler->isSupport()){
-				$cache_key = 'object_newest_comment_list:'.$obj->module_srl;
+				$object_key = 'object_newest_comment_list:'.$obj->module_srl;
+                                $cache_key = $oCacheHandler->getGroupKey('commentList', $object_key);
 				$output = $oCacheHandler->get($cache_key);
 			}
 			if(!$output){