diff --git a/wrenchboard/src/shared_tool/site_crons.cc b/wrenchboard/src/shared_tool/site_crons.cc
index a3cd910d..67eb9ed8 100644
--- a/wrenchboard/src/shared_tool/site_crons.cc
+++ b/wrenchboard/src/shared_tool/site_crons.cc
@@ -165,6 +165,7 @@ long ProcessExpiredOffers(CVars in, CVars &out){
                           " WHERE expire< now() "
                           " AND status = 1 "
                           " AND refund_auto IS NULL "
+                          " AND payment_id IS NOT NULL "
                           " ORDER BY id ASC LIMIT 10");
 
         if (res != NULL && pgsql_num_rows(res) > 0) {