Hello, I am using nagios plugins 1.4.15 and I have a question about the check_procs plugin.

If I execute it as root:
root@localhost[/usr/local/nagios/libexec]# ./check_procs -w 50 -c 100
PROCS CRITICAL: 126 processes

Now if I do it as nagios user:
nagios@localhost[/usr/local/nagios/libexec]# ./check_procs -w 50 -c 100
PROCS OK: 2 processes

Obviously it gives me the result of doing ps as the selected user, and I don't want this to happen like this.
From the remote Nagios Server using NRPE, I also have the wrong result of 2 processes.
Is there a fix for this? May I have to write a script for myself?