Why is my debian always in runlevel 5?

I have configured the line in /etc/inittab as follows:

# The default runlevel.
id:2:initdefault:

But after logging in the output of runlevel is as follows:

N 5

So why am I in runlevel 5 instaed of 2?

As an additionaly info here is uname -a output for my system

Linux d3bi4n 3.16.0-4-amd64 #1 SMP Debian 3.16.7-2 (2014-11-06) x86_64 GNU/Linux

Nice regards, matthias