diff --git a/modules/boonex/membership/install/sql/uninstall.sql b/modules/boonex/membership/install/sql/uninstall.sql
index 53912388..6d142340 100644
--- a/modules/boonex/membership/install/sql/uninstall.sql
+++ b/modules/boonex/membership/install/sql/uninstall.sql
@@ -25,6 +25,6 @@ DELETE FROM `sys_cron_jobs` WHERE `name`=@sModuleName;
 
 
 -- alerts
-SELECT @iHandlerId:=`id` FROM `sys_alerts_handlers` WHERE `name`=@sModuleName LIMIT 1;
+SET @iHandlerId = (SELECT `id` FROM `sys_alerts_handlers` WHERE `name`=@sModuleName LIMIT 1);
 DELETE FROM `sys_alerts_handlers` WHERE `name`=@sModuleName LIMIT 1;
-DELETE FROM `sys_alerts` WHERE `handler_id`=@iHandlerId;
\ No newline at end of file
+DELETE FROM `sys_alerts` WHERE `handler_id`=@iHandlerId;