diff --git a/common/constant/default.go b/common/constant/default.go
index c6486b6489..037abeab58 100644
--- a/common/constant/default.go
+++ b/common/constant/default.go
@@ -51,7 +51,7 @@ const (
 const (
 	DEFAULT_KEY               = "default"
 	PREFIX_DEFAULT_KEY        = "default."
-	DEFAULT_SERVICE_FILTERS   = EchoFilterKey+","+TokenFilterKey+","+AccessLogFilterKey+","+TpsLimitFilterKey+","+GenericServiceFilterKey+","+ExecuteLimitFilterKey+","+GracefulShutdownProviderFilterKey
+	DEFAULT_SERVICE_FILTERS   = EchoFilterKey + "," + TokenFilterKey + "," + AccessLogFilterKey + "," + TpsLimitFilterKey + "," + GenericServiceFilterKey + "," + ExecuteLimitFilterKey + "," + GracefulShutdownProviderFilterKey
 	DEFAULT_REFERENCE_FILTERS = GracefulShutdownConsumerFilterKey
 	GENERIC_REFERENCE_FILTERS = GenericFilterKey
 	GENERIC                   = "$invoke"
diff --git a/filter/hystrix/filter.go b/filter/hystrix/filter.go
index 1be509225f..8dbdae918b 100644
--- a/filter/hystrix/filter.go
+++ b/filter/hystrix/filter.go
@@ -41,7 +41,7 @@ import (
 
 const (
 	// nolint
-	HYSTRIX         = "hystrix"
+	HYSTRIX = "hystrix"
 )
 
 var (