diff --git a/env.sh b/env.sh
index effe121..b66f2c8 100644
--- a/env.sh
+++ b/env.sh
@@ -24,6 +24,8 @@
  
 if test -e venv/.stamp; then activate; else setup; fi
 
+unset -f activate die setup
+
 dotidy() { black src tests build.py; }
 dolint() { flake8 src tests build.py; }
 dotest() { pytest -q -n auto --hypothesis-profile=dev; }