diff --git a/conftest.py b/conftest.py
index f0786b909de..e845e4e016a 100644
--- a/conftest.py
+++ b/conftest.py
@@ -85,7 +85,6 @@ def pytest_configure(config):
     Reads in the tests/tests.yaml file. This file contains a list of
     each answer test's answer file (including the changeset number).
     """
-    ytcfg["yt", "internals", "within_pytest"] = True
     # Register custom marks for answer tests and big data
     config.addinivalue_line("markers", "answer_test: Run the answer tests.")
     config.addinivalue_line(
diff --git a/yt/config.py b/yt/config.py
index 758454a4f90..8ae7364145b 100644
--- a/yt/config.py
+++ b/yt/config.py
@@ -45,7 +45,6 @@
     "ray_tracing_engine": "yt",
     "internals": {
         "within_testing": False,
-        "within_pytest": False,
         "parallel": False,
         "strict_requires": False,
         "global_parallel_rank": 0,