diff --git a/pkgs/development/python-modules/httpx2/default.nix b/pkgs/development/python-modules/httpx2/default.nix
index a87bc2aacef3..962f8760414e 100644
--- a/pkgs/development/python-modules/httpx2/default.nix
+++ b/pkgs/development/python-modules/httpx2/default.nix
@@ -115,7 +115,8 @@ buildPythonPackage (finalAttrs: {
     "test_client_decode_text_using_autodetect"
     "test_client_decode_text_using_explicit_encoding"
     "test_response_decode_text_using_autodetect"
-  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
+  ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # TODO?
     "test_keepalive_ping"
   ];