diff --git a/internal/store/postgres/device_sim_binding_store.go b/internal/store/postgres/device_sim_binding_store.go
index 4917fd5f..359e33fe 100644
--- a/internal/store/postgres/device_sim_binding_store.go
+++ b/internal/store/postgres/device_sim_binding_store.go
@@ -196,7 +196,9 @@ func (s *DeviceSimBindingStore) GetBoundICCIDs(ctx context.Context, iccids []str
 	}
 
 	if len(list19) > 0 {
-		var rows []struct{ ICCID string }
+		var rows []struct {
+			ICCID string `gorm:"column:iccid"`
+		}
 		if err := s.db.WithContext(ctx).
 			Table("tb_device_sim_binding b").
 			Select("c.iccid_19 AS iccid").
@@ -211,7 +213,9 @@ func (s *DeviceSimBindingStore) GetBoundICCIDs(ctx context.Context, iccids []str
 	}
 
 	if len(list20) > 0 {
-		var rows []struct{ ICCID string }
+		var rows []struct {
+			ICCID string `gorm:"column:iccid"`
+		}
 		if err := s.db.WithContext(ctx).
 			Table("tb_device_sim_binding b").
 			Select("c.iccid_20 AS iccid").