diff --git a/vars/ubuntu-17.yml b/vars/ubuntu-17.yml
index 751b16706..ff03515e0 100644
--- a/vars/ubuntu-17.yml
+++ b/vars/ubuntu-17.yml
@@ -26,6 +26,3 @@ sshd_service: ssh
 php_version: 7.1
 postgresql_version: 9.6
 systemd_location: /lib/systemd/system
-# Upgrade Ubuntu 17.10's Calibre 3.7.0 to very latest:
-calibre_via_debs: False
-calibre_via_python: True