diff --git a/cluster/router/healthcheck/default_health_check.go b/cluster/router/healthcheck/default_health_check.go
index a59e58ff61e3602a7581388ca06e6955ea19f436..f1ae9c20a222b463898db4498764caf99d95e3a4 100644
--- a/cluster/router/healthcheck/default_health_check.go
+++ b/cluster/router/healthcheck/default_health_check.go
@@ -48,7 +48,7 @@ type DefaultHealthChecker struct {
 // IsHealthy evaluates the healthy state on the given Invoker based on the number of successive bad request
 // and the current active request
 func (c *DefaultHealthChecker) IsHealthy(invoker protocol.Invoker) bool {
-	if !protocol.GetInvokerHealthyStatus(invoker){
+	if !protocol.GetInvokerHealthyStatus(invoker) {
 		return false
 	}
 
@@ -96,7 +96,6 @@ func (c *DefaultHealthChecker) getCircuitBreakerSleepWindowTime(status *protocol
 	return int64(sleepWindow)
 }
 
-
 // GetRequestSuccessiveFailureThreshold return the requestSuccessiveFailureThreshold bound to this DefaultHealthChecker
 func (c *DefaultHealthChecker) GetRequestSuccessiveFailureThreshold() int32 {
 	return c.requestSuccessiveFailureThreshold
diff --git a/common/constant/key.go b/common/constant/key.go
index b10d12d7981d8734610a587a3ffaa36b03dda0e7..786c6ed016e60c103900c355ebf00704246a94dd 100644
--- a/common/constant/key.go
+++ b/common/constant/key.go
@@ -90,7 +90,6 @@ const (
 	RETRY_TIMES_KEY                        = "retry.times"
 	CYCLE_REPORT_KEY                       = "cycle.report"
 	DEFAULT_BLACK_LIST_RECOVER_BLOCK       = 10
-
 )
 
 const (
diff --git a/registry/zookeeper/registry.go b/registry/zookeeper/registry.go
index 76fc052b6f471c776b9740e480be5023f494633e..fe492c2b12712e0935ccd6fdd264e0fe8f24e213 100644
--- a/registry/zookeeper/registry.go
+++ b/registry/zookeeper/registry.go
@@ -212,7 +212,7 @@ func (r *zkRegistry) registerTempZookeeperNode(root string, node string) error {
 
 	r.cltLock.Lock()
 	defer r.cltLock.Unlock()
-	if r.client == nil{
+	if r.client == nil {
 		return perrors.WithStack(perrors.New("zk client already been closed"))
 	}
 	err = r.client.Create(root)