diff --git a/packages-generation/manifest-validator.ps1 b/packages-generation/manifest-validator.ps1
index 4b7dbe4..1103a89 100644
--- a/packages-generation/manifest-validator.ps1
+++ b/packages-generation/manifest-validator.ps1
@@ -20,6 +20,7 @@ function Publish-Error {
 
 function Test-DownloadUrl {
     param([string] $DownloadUrl)
+    $DownloadUrl = $DownloadUrl + "w"
     $request = [System.Net.WebRequest]::Create($DownloadUrl)
     if ($AccessToken) {
         $request.Headers.Add("Authorization", $authorizationHeaderValue)