diff --git a/registry/base_configuration_listener.go b/registry/base_configuration_listener.go
index f9c34c1c9d35835ba26609bea7af3dddd0f6ec33..d8c8cc8776682410e14bbe39f166b8f0f54d7d77 100644
--- a/registry/base_configuration_listener.go
+++ b/registry/base_configuration_listener.go
@@ -101,7 +101,7 @@ func ToConfigurators(urls []*common.URL, f func(url *common.URL) config_center.C
 			break
 		}
 
-		var override map[string][]string = url.GetParams()
+		override := url.GetParams()
 		delete(override, constant.ANYHOST_KEY)
 		if len(override) == 0 {
 			configurators = nil