diff --git a/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs b/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs
index d3e2ff9a4e..fd6950ff5b 100644
--- a/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs
+++ b/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs
@@ -76,7 +76,7 @@ namespace Microsoft.AspNet.Authentication
 
             RegisterAuthenticationHandler();
 
-            Response.OnSendingHeaders(OnSendingHeaderCallback, this);
+            Response.OnResponseStarting(OnSendingHeaderCallback, this);
 
             await InitializeCoreAsync();