diff --git a/Autorun-on-Arch-Live-CD.md b/Autorun-on-Arch-Live-CD.md
index 8c3e047..5bdbb26 100644
--- a/Autorun-on-Arch-Live-CD.md
+++ b/Autorun-on-Arch-Live-CD.md
@@ -12,6 +12,7 @@ python-psutil
 python-systemd
 python-pygeoip
 geoip-database
+which
 EOF
 # cat <<EOF >> ./airootfs/root/customize_airootfs.sh
 cd /root