diff --git a/metrics/prometheus/reporter.go b/metrics/prometheus/reporter.go
index b7e120bdd43cf9bfb83803dea0b36761689e72e2..e6dfdb4aeedb2c9c2053dc329bc945a470a9c701 100644
--- a/metrics/prometheus/reporter.go
+++ b/metrics/prometheus/reporter.go
@@ -56,7 +56,7 @@ const (
 )
 
 var (
-	labelNames       = []string{serviceKey, groupKey, versionKey, methodKey, timeoutKey,}
+	labelNames       = []string{serviceKey, groupKey, versionKey, methodKey, timeoutKey}
 	namespace        = config.GetApplicationConfig().Name
 	reporterInstance *PrometheusReporter
 	reporterInitOnce sync.Once