diff --git a/modules/comment/comment.model.php b/modules/comment/comment.model.php
index cb1792bda..8568fc939 100644
--- a/modules/comment/comment.model.php
+++ b/modules/comment/comment.model.php
@@ -49,7 +49,7 @@ class commentModel extends comment
 			$columnList = array('comment_srl', 'module_srl', 'member_srl', 'ipaddress');
 			$oComment = $oCommentModel->getComment($comment_srl, FALSE, $columnList);
 			$module_srl = $oComment->get('module_srl');
-			$member_srl = $oComment->get('member_srl');
+			$member_srl = abs($oComment->get('member_srl'));
 
 			$oModuleModel = getModel('module');
 			$comment_config = $oModuleModel->getModulePartConfig('document', $module_srl);
diff --git a/modules/document/document.model.php b/modules/document/document.model.php
index 04ce31942..0960aa531 100644
--- a/modules/document/document.model.php
+++ b/modules/document/document.model.php
@@ -453,7 +453,7 @@ class documentModel extends document
 			$columnList = array('document_srl', 'module_srl', 'member_srl', 'ipaddress');
 			$oDocument = $oDocumentModel->getDocument($document_srl, false, false, $columnList);
 			$module_srl = $oDocument->get('module_srl');
-			$member_srl = $oDocument->get('member_srl');
+			$member_srl = abs($oDocument->get('member_srl'));
 			if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 			$oModuleModel = getModel('module');
diff --git a/modules/member/member.controller.php b/modules/member/member.controller.php
index bf1235793..cf0b6aa9d 100644
--- a/modules/member/member.controller.php
+++ b/modules/member/member.controller.php
@@ -3498,7 +3498,7 @@ class memberController extends member
 		$oDocumentModel = getModel('document');
 		$columnList = array('document_srl', 'module_srl', 'member_srl', 'ipaddress');
 		$oDocument = $oDocumentModel->getDocument($document_srl, false, false, $columnList);
-		$member_srl = $oDocument->get('member_srl');
+		$member_srl = abs($oDocument->get('member_srl'));
 		$module_srl = $oDocument->get('module_srl');
 
 		if(!$member_srl) return;
@@ -3527,7 +3527,7 @@ class memberController extends member
 		$columnList = array('comment_srl', 'module_srl', 'member_srl', 'ipaddress');
 		$oComment = $oCommentModel->getComment($comment_srl, FALSE, $columnList);
 		$module_srl = $oComment->get('module_srl');
-		$member_srl = $oComment->get('member_srl');
+		$member_srl = abs($oComment->get('member_srl'));
 
 		if(!$member_srl) return;
 		if($oCommentModel->grant->manager != 1 || $member_srl==$logged_info->member_srl) return;