diff --git a/websocket-sharp/Server/HttpServer.cs b/websocket-sharp/Server/HttpServer.cs
index aa9c6d83..270b859a 100644
--- a/websocket-sharp/Server/HttpServer.cs
+++ b/websocket-sharp/Server/HttpServer.cs
@@ -687,12 +687,12 @@ namespace WebSocketSharp.Server
     }
 
     /// <summary>
-    /// Gets or sets the time to wait for the response to
-    /// the WebSocket Ping or Close.
+    /// Gets or sets the time to wait for the response to the WebSocket Ping or
+    /// Close.
     /// </summary>
     /// <remarks>
-    /// The set operation does nothing if the server has already
-    /// started or it is shutting down.
+    /// The set operation does nothing if the server has already started or
+    /// it is shutting down.
     /// </remarks>
     /// <value>
     ///   <para>
@@ -702,7 +702,7 @@ namespace WebSocketSharp.Server
     ///   The default value is the same as 1 second.
     ///   </para>
     /// </value>
-    /// <exception cref="ArgumentException">
+    /// <exception cref="ArgumentOutOfRangeException">
     /// The value specified for a set operation is zero or less.
     /// </exception>
     public TimeSpan WaitTime {