PGSQL error?

==== Required information ====
- iRedMail version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Linux/BSD distribution name and version:
- Related log if you're reporting an issue:
======== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Linux/BSD distribution name and version: Debian 7.4
- Related log if you're reporting an issue:
====

Hi, I noticed this in /var/log/messages and cant seem to find info on google, any idea if this is an issue or if I can just ignore it.

Feb 19 15:34:55 bushveld kernel: postgres (3615): /proc/3615/oom_adj is deprecated, please use /proc/3615/oom_score_adj instead.

Thanks!