diff --git a/app/arbiter/contract/contract_listener.go b/app/arbiter/contract/contract_listener.go
index 5568179..5d95cf7 100644
--- a/app/arbiter/contract/contract_listener.go
+++ b/app/arbiter/contract/contract_listener.go
@@ -60,6 +60,7 @@ func (c *ContractListener) Start(startHeight uint64) (uint64, error) {
 		err = c.filterLoanEvent(loanQuery)
 		if err != nil {
 			g.Log().Error(c.ctx, "filter filterLoanEvent failed, error:", err)
+			return math.MaxUint64, err
 		}
 	}
 	return toBlock, nil