diff --git a/modules/ncenterlite/ncenterlite.class.php b/modules/ncenterlite/ncenterlite.class.php
index d93f3db2d..8d1e317c3 100644
--- a/modules/ncenterlite/ncenterlite.class.php
+++ b/modules/ncenterlite/ncenterlite.class.php
@@ -129,6 +129,12 @@ class ncenterlite extends ModuleObject
 			return true;
 		}
 
+		// Composite index to speed up getNotifyList
+		if(!$oDB->isIndexExists('ncenterlite_notify', 'idx_member_srl_and_readed'))
+		{
+			return true;
+		}
+
 		// PK duplicate
 		if($oDB->isIndexExists('ncenterlite_notify', 'idx_notify'))
 		{
@@ -208,6 +214,12 @@ class ncenterlite extends ModuleObject
 			$oDB->addIndex('ncenterlite_notify', 'idx_target_member_srl', array('target_member_srl'));
 		}
 
+		// Composite index to speed up getNotifyList
+		if(!$oDB->isIndexExists('ncenterlite_notify', 'idx_member_srl_and_readed'))
+		{
+			$oDB->addIndex('ncenterlite_notify', 'idx_member_srl_and_readed', array('member_srl', 'readed'));
+		}
+
 		// PK duplicate
 		if($oDB->isIndexExists('ncenterlite_notify', 'idx_notify'))
 		{