diff --git a/bootstrap/archlinux.sh b/bootstrap/archlinux.sh
index fb54c83d5..6de7c23d4 100755
--- a/bootstrap/archlinux.sh
+++ b/bootstrap/archlinux.sh
@@ -1,8 +1,12 @@
 #!/bin/sh
+
+# "python-virtualenv" is Python3, but "python2-virtualenv" provides
+# only "virtualenv2" binary, not "virtualenv" necessary in
+# ./bootstrap/dev/_common_venv.sh
 pacman -S \
   git \
   python2 \
-  python2-virtualenv \
+  python-virtualenv \
   gcc \
   dialog \
   augeas \