diff --git a/tox.ini b/tox.ini
index 7db2a56..9111c6b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,7 +12,7 @@ env_list =
 
 
 [testenv]
-description = Run tests and do NOT measure coverage / type-check.
+description = Run tests / check types and do NOT measure coverage.
 package = wheel
 wheel_build_env = .pkg
 extras =
@@ -87,7 +87,7 @@ description = Build docs and run doctests.
 base_python = py312
 extras = docs
 commands =
-    python -Im doctest README.md
+    python -m doctest README.md
     sphinx-build -W -n -b html -d {envtmpdir}/doctrees docs docs/_build/html
     sphinx-build -W -n -b doctest -d {envtmpdir}/doctrees docs docs/_build/html