diff --git a/src/lib-csharp/Sources/HttpClientFileDownloader.cs b/src/lib-csharp/Sources/HttpClientFileDownloader.cs
index 183b66cd..d0a2e7d0 100644
--- a/src/lib-csharp/Sources/HttpClientFileDownloader.cs
+++ b/src/lib-csharp/Sources/HttpClientFileDownloader.cs
@@ -9,7 +9,6 @@ using System.Threading.Tasks;
 
 namespace Velopack.Sources
 {
-
     /// <inheritdoc cref="IFileDownloader"/>
     public class HttpClientFileDownloader : IFileDownloader
     {
@@ -72,7 +71,7 @@ namespace Velopack.Sources
         {
             // https://stackoverflow.com/a/46497896/184746
             // Get the http headers first to examine the content length
-            using var response = await client.GetAsync(requestUri, HttpCompletionOption.ResponseHeadersRead).ConfigureAwait(false);
+            using var response = await client.GetAsync(requestUri, HttpCompletionOption.ResponseHeadersRead, cancelToken).ConfigureAwait(false);
             response.EnsureSuccessStatusCode();
 
             var contentLength = response.Content.Headers.ContentLength;
diff --git a/test/Velopack.Tests/TestHelpers/FakeDownloader.cs b/test/Velopack.Tests/TestHelpers/FakeDownloader.cs
index c929d8f6..ae603248 100644
--- a/test/Velopack.Tests/TestHelpers/FakeDownloader.cs
+++ b/test/Velopack.Tests/TestHelpers/FakeDownloader.cs
@@ -7,7 +7,7 @@ public class FakeDownloader : IFileDownloader
 {
     public string LastUrl { get; private set; }
     public string LastLocalFile { get; private set; }
-    public IDictionary<string, string>? LastHeaders { get; private set; }
+    public IDictionary<string, string> LastHeaders { get; private set; } = new Dictionary<string, string>();
     public byte[] MockedResponseBytes { get; set; } = [];
     public bool WriteMockLocalFile { get; set; } = false;