diff --git a/websocket-sharp/Net/HttpStatusCode.cs b/websocket-sharp/Net/HttpStatusCode.cs
index dbdfc763..cd2fa233 100644
--- a/websocket-sharp/Net/HttpStatusCode.cs
+++ b/websocket-sharp/Net/HttpStatusCode.cs
@@ -316,9 +316,8 @@ namespace WebSocketSharp.Net
     /// </summary>
     InternalServerError = 500,
     /// <summary>
-    /// Equivalent to status code 501.
-    /// Indicates that the server doesn't support the functionality required to fulfill the client's
-    /// request.
+    /// Equivalent to status code 501. Indicates that the server does not
+    /// support the functionality required to fulfill the client's request.
     /// </summary>
     NotImplemented = 501,
     /// <summary>