diff --git a/webapp/controller/EventRankingController.class.php b/webapp/controller/EventRankingController.class.php
index 6d501a70..bde87534 100644
--- a/webapp/controller/EventRankingController.class.php
+++ b/webapp/controller/EventRankingController.class.php
@@ -123,7 +123,7 @@ class EventRankingController extends BaseAuthedController
             case \services\RankActivityService::GUILD_TYPE : {
                 $rows = myself()->_getSelfMysql()->execQuery(
                     'SELECT guild_id,SUM(value) AS value FROM t_rank_activity ' .
-                    'WHERE wave=:wave AND type=:type ' .
+                    'WHERE wave=:wave AND type=:type AND guild_id<>""' .
                     'GROUP BY guild_id '.
                     'ORDER BY value DESC ' .
                     "LIMIT 10",