diff --git a/tests/oauth2/test__client.py b/tests/oauth2/test__client.py
index 745a4b675..9cf59eb98 100644
--- a/tests/oauth2/test__client.py
+++ b/tests/oauth2/test__client.py
@@ -112,15 +112,12 @@ def test__token_endpoint_request_error():
 
 def test__token_endpoint_request_internal_failure_error():
     request = make_request(
-        {"error": "internal_failure", "error_description": "internal_failure"},
-        status=http_client.BAD_REQUEST,
+        {"error_description": "internal_failure"}, status=http_client.BAD_REQUEST
     )
 
     with pytest.raises(exceptions.RefreshError):
         _client._token_endpoint_request(
-            request,
-            "http://example.com",
-            {"error": "internal_failure", "error_description": "internal_failure"},
+            request, "http://example.com", {"error_description": "internal_failure"}
         )
 
     request = make_request(