diff --git a/modules/comment/comment.controller.php b/modules/comment/comment.controller.php
index b58492750..4242e6406 100644
--- a/modules/comment/comment.controller.php
+++ b/modules/comment/comment.controller.php
@@ -338,7 +338,8 @@
             $oDocumentModel = &getModel('document');
 
             // 권한이 있는지 확인
-            if(!$oDocumentModel->isGranted($document_srl)) return new Object(-1, 'msg_not_permitted');
+            $oDocument = $oDocumentModel->getDocument($document_srl);
+            if(!$oDocument->isExists() || !$oDocument->isGranted()) return new Object(-1, 'msg_not_permitted');
 
             // 삭제
             $args->document_srl = $document_srl;
diff --git a/modules/document/document.model.php b/modules/document/document.model.php
index 19fe8cf07..c134ac5d3 100644
--- a/modules/document/document.model.php
+++ b/modules/document/document.model.php
@@ -24,10 +24,13 @@
          * @brief 문서 가져오기
          **/
         function getDocument($document_srl=0, $is_admin = false) {
-            $oDocument = new documentItem($document_srl);
-            if($is_admin) $oDocument->setGrant();
+            if(!$GLOBALS['__DocumentItem__'][$document_srl]) {
+                $oDocument = new documentItem($document_srl);
+                if($is_admin) $oDocument->setGrant();
+                $GLOBALS['__DocumentItem__'][$document_srl] = $oDocument;
+            }
 
-            return $oDocument;
+            return $GLOBALS['__DocumentItem__'][$document_srl];
        }
 
         /**