diff --git a/src/pkg/websocket/server.go b/src/pkg/websocket/server.go
index 8320b032ea..63f48e2569 100644
--- a/src/pkg/websocket/server.go
+++ b/src/pkg/websocket/server.go
@@ -74,7 +74,7 @@ A trivial example server:
 		http.Handle("/echo", websocket.Handler(EchoServer));
 		err := http.ListenAndServe(":12345", nil);
 		if err != nil {
-			panic("ListenAndServe: " + err.String())
+			panic("ListenAndServe: " + err.Error())
 		}
 	}
 */