diff --git a/registry/zookeeper/registry.go b/registry/zookeeper/registry.go
index fe492c2b12712e0935ccd6fdd264e0fe8f24e213..7bab1d1deb19847f965d9b4b19dfda3d391ad414 100644
--- a/registry/zookeeper/registry.go
+++ b/registry/zookeeper/registry.go
@@ -251,8 +251,7 @@ func (r *zkRegistry) getListener(conf *common.URL) (*RegistryConfigurationListen
 	dataListener.mutex.Lock()
 	defer dataListener.mutex.Unlock()
 	if r.dataListener.subscribed[conf.ServiceKey()] != nil {
-
-		zkListener, _ := r.dataListener.subscribed[conf.ServiceKey()].(*RegistryConfigurationListener)
+		zkListener, _ = r.dataListener.subscribed[conf.ServiceKey()].(*RegistryConfigurationListener)
 		if zkListener != nil {
 			r.listenerLock.Lock()
 			defer r.listenerLock.Unlock()