diff --git a/TESTING.rst b/TESTING.rst
index cd99cbb..2ac28c7 100644
--- a/TESTING.rst
+++ b/TESTING.rst
@@ -19,7 +19,13 @@ Here's the OSX Homebrew command:
 
     brew install libjpeg libtiff little-cms2 openjpeg webp
 
-Finally, just run ``tox``!
+Finally, just run ``tox``::
+
+    poetry run tox
+    # or
+    poetry shell
+    tox
+
 If you want, you can test against a specific version like this: ``tox -e py312-pil``
 
 
diff --git a/qrcode/tests/test_script.py b/qrcode/tests/test_script.py
index 5135b1f..d6338de 100644
--- a/qrcode/tests/test_script.py
+++ b/qrcode/tests/test_script.py
@@ -48,7 +48,7 @@ def test_stdin_py3_unicodedecodeerror():
 
 
 def test_optimize():
-    pytest.importorskip("PyPNG", reason="Requires PyPNG")
+    pytest.importorskip("PIL", reason="Requires PIL")
     main("testtext --optimize 0".split())