diff --git a/tox.ini b/tox.ini
index fba15df..4441a74 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,7 +19,7 @@ setenv =
     # Display up to 20 frames in backtraces when showing ResourceWarnings.
     PYTHONTRACEMALLOC=20
 commands =
-    python -Wall -m pytest --strict-markers --cov {posargs}
+    pytest -Wall --strict-markers --cov {posargs}
 extras = md
 
 [testenv:mypy]