diff --git a/websocket-sharp/Net/HttpListenerRequest.cs b/websocket-sharp/Net/HttpListenerRequest.cs
index e1d23fc4..cc1940e8 100644
--- a/websocket-sharp/Net/HttpListenerRequest.cs
+++ b/websocket-sharp/Net/HttpListenerRequest.cs
@@ -322,12 +322,7 @@ namespace WebSocketSharp.Net
     /// </value>
     public bool KeepAlive {
       get {
-        if (!_keepAliveSet) {
-          _keepAlive = _headers.KeepsAlive (_version);
-          _keepAliveSet = true;
-        }
-
-        return _keepAlive;
+        return _headers.KeepsAlive (_version);
       }
     }