diff --git a/websocket-sharp/Net/HttpListenerPrefixCollection.cs b/websocket-sharp/Net/HttpListenerPrefixCollection.cs
index 6b27685f..25531462 100644
--- a/websocket-sharp/Net/HttpListenerPrefixCollection.cs
+++ b/websocket-sharp/Net/HttpListenerPrefixCollection.cs
@@ -225,8 +225,8 @@ namespace WebSocketSharp.Net
     /// <paramref name="array"/> is not enough to copy to.
     /// </exception>
     /// <exception cref="ObjectDisposedException">
-    /// The <see cref="HttpListener"/> instance associated with
-    /// this collection is closed.
+    /// The <see cref="HttpListener"/> instance associated with this
+    /// collection is closed.
     /// </exception>
     public void CopyTo (string[] array, int offset)
     {