diff --git a/mkfile b/mkfile
index f144f94..e8f3b67 100644
--- a/mkfile
+++ b/mkfile
@@ -59,7 +59,7 @@ install:V: build
 cron-install:V:
 	mkdir -p $HOME/.local/share/anvillm
 	crontab -l 2>/dev/null | grep -v 'anvillm-supervisor' | grep -v '^PLAN9=' | grep -v '^PATH=' >/tmp/crontab.new || true
-	echo "PLAN9=$PLAN9" >>/tmp/crontab.new
+	echo "PLAN9=$HOME/plan9" >>/tmp/crontab.new
 	echo "PATH=$PATH" >>/tmp/crontab.new
 	echo "*/5 * * * * $HOME/bin/anvillm-supervisor --orphans >>$HOME/.local/share/anvillm/worker-check.log 2>&1" >>/tmp/crontab.new
 	echo "*/1 * * * * $HOME/bin/anvillm-supervisor --nudge >>$HOME/.local/share/anvillm/worker-check.log 2>&1" >>/tmp/crontab.new