diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index a7f72260..34b9c9bd 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -3423,7 +3423,8 @@ namespace WebSocketSharp
     /// </remarks>
     /// <exception cref="InvalidOperationException">
     ///   <para>
-    ///   The interface is not for the client.
+    ///   The ConnectAsync method is not available if the interface is not
+    ///   for the client.
     ///   </para>
     ///   <para>
     ///   -or-