diff --git a/websocket-sharp/Net/HttpDigestIdentity.cs b/websocket-sharp/Net/HttpDigestIdentity.cs
index a286cefc..9d8d6653 100644
--- a/websocket-sharp/Net/HttpDigestIdentity.cs
+++ b/websocket-sharp/Net/HttpDigestIdentity.cs
@@ -105,7 +105,7 @@ namespace WebSocketSharp.Net
     }
 
     /// <summary>
-    /// Gets the opaque parameter from the HTTP Digest authentication credentials.
+    /// Gets the opaque parameter from a digest authentication attempt.
     /// </summary>
     /// <value>
     /// A <see cref="string"/> that represents the opaque parameter.