diff --git a/websocket-sharp/Net/ServerSslConfiguration.cs b/websocket-sharp/Net/ServerSslConfiguration.cs
index 9c33a99f..84809a48 100644
--- a/websocket-sharp/Net/ServerSslConfiguration.cs
+++ b/websocket-sharp/Net/ServerSslConfiguration.cs
@@ -131,7 +131,7 @@ namespace WebSocketSharp.Net
     /// </summary>
     /// <value>
     /// <c>true</c> if the client is asked for a certificate for authentication;
-    /// otherwise, <c>false</c>.
+    /// otherwise, <c>false</c>. The default value is <c>false</c>.
     /// </value>
     public bool ClientCertificateRequired {
       get {