diff --git a/client/ws_client.go b/client/ws_client.go
index a2506585b..f7a23fca8 100644
--- a/client/ws_client.go
+++ b/client/ws_client.go
@@ -37,6 +37,10 @@ func NewWSClient(addr string) *WSClient {
 	return wsClient
 }
 
+func (wsc *WSClient) String() string {
+	return wsc.Address
+}
+
 func (wsc *WSClient) OnStart() error {
 	wsc.QuitService.OnStart()
 	err := wsc.dial()