diff --git a/Python3.md b/Python3.md
index 88fce5f..6e7256d 100644
--- a/Python3.md
+++ b/Python3.md
@@ -119,10 +119,12 @@ if PY2:
 
 This adds builtins that match Python 3's semantics. The `#noqa: F401` keeps flake8/pyflakes from complaining about unused imports. We do unused imports so that people changing code later don't have to manually check if `map()` is old style or new style.
 
+Then, delete any instances of `from builtins import <name>`.
+
 Consider using this sed command to execute the above:
 
 ```
-$ sed -ie '/from future import standard_library/d;/standard_library.install_aliases()/d;/from builtins import str/d;s/from builtins import \*/from future.utils import PY2\\nif PY2:\\n    from future.builtins import filter, map, zip, ascii, chr, hex, input, next, oct, open, pow, round, super, bytes, dict, list, object, range, str, max, min  # noqa: F401/' src/allmydata/test/test_runner.py
+$ sed -ie '/from future import standard_library/d;/standard_library.install_aliases()/d;s/from builtins import \*/from future.utils import PY2\\nif PY2:\\n    from future.builtins import filter, map, zip, ascii, chr, hex, input, next, oct, open, pow, round, super, bytes, dict, list, object, range, str, max, min  # noqa: F401/;/from builtins import .*/d' path/to/file.py
 ```
 
 **Fourth**, manually review the code. Futureize is nice, but it very definitely doesn't catch everything, or it makes wrong decisions.