diff --git a/bridge/pier/span.go b/bridge/pier/span.go
index 3239a34f5..a96441ac3 100644
--- a/bridge/pier/span.go
+++ b/bridge/pier/span.go
@@ -233,7 +233,7 @@ func (s *SpanService) fetchNextSpanDetails(id uint64, start uint64) (*types.Span
 	q := req.URL.Query()
 	q.Add("span_id", strconv.FormatUint(id, 10))
 	q.Add("start_block", strconv.FormatUint(start, 10))
-	q.Add("chain_id", viper.GetString("bor-chain-id"))
+	q.Add("chain_id", helper.GetConfig().BorChainID)
 	q.Add("proposer", helper.GetFromAddress(s.cliCtx).String())
 	req.URL.RawQuery = q.Encode()