diff --git a/websocket-sharp/Net/ServerSslConfiguration.cs b/websocket-sharp/Net/ServerSslConfiguration.cs
index 6eeca0f5..7ed8f1e4 100644
--- a/websocket-sharp/Net/ServerSslConfiguration.cs
+++ b/websocket-sharp/Net/ServerSslConfiguration.cs
@@ -211,11 +211,10 @@ namespace WebSocketSharp.Net
     /// </summary>
     /// <value>
     ///   <para>
-    ///   A <see cref="X509Certificate2"/> or <see langword="null"/>
-    ///   if not specified.
+    ///   A <see cref="X509Certificate2"/> or <see langword="null"/>.
     ///   </para>
     ///   <para>
-    ///   That instance represents an X.509 certificate.
+    ///   The certificate represents an X.509 certificate.
     ///   </para>
     /// </value>
     public X509Certificate2 ServerCertificate {