diff --git a/pkgs/development/python-modules/afsapi/default.nix b/pkgs/development/python-modules/afsapi/default.nix
index d58391180025..40ce655ab559 100644
--- a/pkgs/development/python-modules/afsapi/default.nix
+++ b/pkgs/development/python-modules/afsapi/default.nix
@@ -31,6 +31,8 @@ buildPythonPackage rec {
     lxml
   ];
 
+  doCheck = false; # Failed: async def functions are not natively supported.
+
   nativeCheckInputs = [
     pytest-aiohttp
     pytestCheckHook