diff --git a/pkg/common/cmd/msg_gateway.go b/pkg/common/cmd/msg_gateway.go
index 3a7399adc..7f0abb771 100644
--- a/pkg/common/cmd/msg_gateway.go
+++ b/pkg/common/cmd/msg_gateway.go
@@ -66,7 +66,7 @@ func (m *MsgGatewayCmd) GetPortFromConfig(portType string) int {
 	} else if portType == constant.FlagPort {
 		return v3config.Config.LongConnSvr.OpenImMessageGatewayPort[0]
 	} else if portType == constant.FlagPrometheusPort {
-		return config2.Config.Prometheus.MessageGatewayPrometheusPort[0]
+		return v3config.Config.Prometheus.MessageGatewayPrometheusPort[0]
 	} else {
 		return 0
 	}