From d058df9b1e50dce8b86139ddc228858c067e432d Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Mon, 23 Oct 2017 16:07:25 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/WebSocket.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index 1b32a2f7..8289a8ef 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -349,7 +349,7 @@ namespace WebSocketSharp
         string msg = null;
 
         if (!_client) {
-          msg = "The set operation cannot be used by servers.";
+          msg = "This instance is not a client.";
           throw new InvalidOperationException (msg);
         }