diff --git a/src/http/Client.zig b/src/http/Client.zig
index bb3fed47..d50e9a58 100644
--- a/src/http/Client.zig
+++ b/src/http/Client.zig
@@ -1320,7 +1320,7 @@ pub const Transfer = struct {
             }
             transfer._redirecting = false;
 
-            if (status == 401 or status == 407) {
+            if ((status == 401 or status == 407) and transfer.client.use_proxy) {
                 // The auth challenge must be parsed from a following
                 // WWW-Authenticate or Proxy-Authenticate header.
                 transfer._auth_challenge = .{