diff --git a/tests/test_cookiecutter_generation.py b/tests/test_cookiecutter_generation.py
index e4a03b3b2..3dea23f94 100755
--- a/tests/test_cookiecutter_generation.py
+++ b/tests/test_cookiecutter_generation.py
@@ -23,7 +23,7 @@ elif sys.platform.startswith("darwin") and os.getenv("CI"):
 # Run auto-fixable styles checks - skipped on CI by default. These can be fixed
 # automatically by running pre-commit after generation however they are tedious
 # to fix in the template, so we don't insist too much in fixing them.
-AUTOFIXABLE_STYLES = os.getenv("AUTOFIXABLE_STYLES") == 1
+AUTOFIXABLE_STYLES = os.getenv("AUTOFIXABLE_STYLES") == "1"
 
 
 @pytest.fixture
@@ -144,11 +144,7 @@ def _fixture_id(ctx):
 
 def build_files_list(base_dir):
     """Build a list containing absolute paths to the generated files."""
-    return [
-        os.path.join(dirpath, file_path)
-        for dirpath, subdirs, files in os.walk(base_dir)
-        for file_path in files
-    ]
+    return [os.path.join(dirpath, file_path) for dirpath, subdirs, files in os.walk(base_dir) for file_path in files]
 
 
 def check_paths(paths):
@@ -240,9 +236,7 @@ def test_travis_invokes_pytest(cookies, context, use_docker, expected_test_scrip
         ("y", "docker-compose -f local.yml run django pytest"),
     ],
 )
-def test_gitlab_invokes_precommit_and_pytest(
-    cookies, context, use_docker, expected_test_script
-):
+def test_gitlab_invokes_precommit_and_pytest(cookies, context, use_docker, expected_test_script):
     context.update({"ci_tool": "Gitlab", "use_docker": use_docker})
     result = cookies.bake(extra_context=context)
 
@@ -269,9 +263,7 @@ def test_gitlab_invokes_precommit_and_pytest(
         ("y", "docker-compose -f local.yml run django pytest"),
     ],
 )
-def test_github_invokes_linter_and_pytest(
-    cookies, context, use_docker, expected_test_script
-):
+def test_github_invokes_linter_and_pytest(cookies, context, use_docker, expected_test_script):
     context.update({"ci_tool": "Github", "use_docker": use_docker})
     result = cookies.bake(extra_context=context)
 
diff --git a/tox.ini b/tox.ini
index f0c22d48e..b10d16427 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@ envlist = py311,black-template
 
 [testenv]
 deps = -rrequirements.txt
+passenv = AUTOFIXABLE_STYLES
 commands = pytest {posargs:./tests}
 
 [testenv:black-template]