diff --git a/Apps/AdvancedBlockingApp/App.cs b/Apps/AdvancedBlockingApp/App.cs
index c721ab2c..00dd625d 100644
--- a/Apps/AdvancedBlockingApp/App.cs
+++ b/Apps/AdvancedBlockingApp/App.cs
@@ -147,6 +147,7 @@ namespace AdvancedBlocking
 
                     SocketsHttpHandler handler = new SocketsHttpHandler();
                     handler.Proxy = _dnsServer.Proxy;
+                    handler.UseProxy = _dnsServer.Proxy is not null;
                     handler.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
 
                     using (HttpClient http = new HttpClient(handler))