diff --git a/System.Net.Http/System.Net.Http/HttpClientHandler.cs b/System.Net.Http/System.Net.Http/HttpClientHandler.cs
index 7803219..2f2b968 100644
--- a/System.Net.Http/System.Net.Http/HttpClientHandler.cs
+++ b/System.Net.Http/System.Net.Http/HttpClientHandler.cs
@@ -369,7 +369,8 @@ private static void AddRequestHeaders(HttpWebRequest request, HttpRequestHeaders
 					break;
 
 				case "connection":
-					request.Connection = headers.Connection.ToString ();
+                    // HttpWebRequest throws an exception if setting the Connection property.
+                    // Use the KeepAlive property instead of this
 					break;
 
 				case "date":