diff --git a/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthLDAP.pm b/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthLDAP.pm
index 5d9e56d68..a8efffadf 100644
--- a/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthLDAP.pm
+++ b/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthLDAP.pm
@@ -39,6 +39,7 @@ sub authenticate {
     # Set the dn unless done before
     unless ( $self->{dn} ) {
         my $tmp = $self->_subProcess(qw(_formateFilter _search));
+        $self->{sessionInfo}->{dn} = $self->{dn};
         return $tmp if ($tmp);
     }
     return $self->ldap->userBind( $self->{dn}, password => $self->{password} );