diff --git a/websocket-sharp/Net/HttpListenerPrefixCollection.cs b/websocket-sharp/Net/HttpListenerPrefixCollection.cs
index 6e2b2118..4a725704 100644
--- a/websocket-sharp/Net/HttpListenerPrefixCollection.cs
+++ b/websocket-sharp/Net/HttpListenerPrefixCollection.cs
@@ -157,7 +157,8 @@ namespace WebSocketSharp.Net
     /// Removes all URI prefixes from the collection.
     /// </summary>
     /// <exception cref="ObjectDisposedException">
-    /// The <see cref="HttpListener"/> associated with this collection is closed.
+    /// The <see cref="HttpListener"/> instance associated with this collection
+    /// is closed.
     /// </exception>
     public void Clear ()
     {