ubuntu data in os-release

[garo]

I always update using aptitude. On a freshly installed mint 17.2 I ran:
aptitude update && aptitude full-upgrade

It asked me if it should replace /etc/issue , /etc/issue.net and /etc/lsb-release .
The default answer (No) keeps these files filled with mint-information

If I would choose Yes it would overwrite with ubuntu information, but since this is not the default it's no problem.

But what is a problem, is that the data in /etc/os-release does get overwritten (aptitude doesn't ask first).
It now contains the following info (I don't know the contents of this file before I ran aptitude, but I'm assuming it originally had mint-information):
NAME="Ubuntu"
VERSION="14.04.3 LTS, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04.3 LTS"
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"

[Krayon (t-launchpad20110909box6)]

It appears a default install of Mint still contains only Ubuntu information in this file.

I have opened https://bugs.launchpad.net/linuxmint/+bug/1641491 accordingly.