centos - cvsroot not taken into account or incorrect -

on centos release 6.7 (final) :

i've set cvsroot using

set cvsroot=:pserver:jay:pwd@hostname.fr:2401:/cvsdata/bus-2010 

where jay susername, pwd password, , hostname.fr hostname. i've launch add:

cvs add yd 

and error message :

cvs add: cvsroot may specify positive, non-zero, integer port (not `2401:'). cvs add: perhaps entered relative pathname? cvs add: in directory .: cvs add: ignoring cvs/root because not contain valid root. cvs add: no cvsroot specified!  please use `-d' option cvs [add aborted]: or set cvsroot environment variable. 

so i've made change removing ':' after port number :

set cvsroot=:pserver:jay:pwd@hostname.fr:2401/cvsdata/bus-2010 

and seems taken account :

$ echo $cvsroot :pserver:jay:pwd@hostname.fr:2401/cvsdata/bus-2010 

but still have same error :

$ cvs add yd cvs add: cvsroot may specify positive, non-zero, integer port (not `2401:'). cvs add: perhaps entered relative pathname? 

what did miss?