diff --git a/setup.cfg b/setup.cfg
index 4769b2f..96fa4ed 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -45,6 +45,8 @@ split_complex_comprehension = true
 split_before_first_argument = true
 
 [tool:pytest]
+python_files = tests/**/*.py tests/*.py
+python_functions = test_* *_test
 addopts =
     -vvv
     --doctest-modules