diff --git a/src/main/resources/mapper/lease/LeaseMachineMapper.xml b/src/main/resources/mapper/lease/LeaseMachineMapper.xml
index f919d33..bfaa928 100644
--- a/src/main/resources/mapper/lease/LeaseMachineMapper.xml
+++ b/src/main/resources/mapper/lease/LeaseMachineMapper.xml
@@ -306,8 +306,8 @@
         lm.id,
         lm.shop_id,
         lm.type,
-        lm.`user`,
-        lm.miner,
+        lm.user,
+        COALESCE(NULLIF(lm.miner, ''), lm.host_mac) as miner,
         lm.state,
         lm.sale_state,
         lm.max_lease_days,