drupal modsecurity args

root@helen:/etc/apache2/conf.d/modsecurity# diff modsecurity_crs_23_request_limits.conf ~/modsecurity_crs_23_request_limits.conf
28c28
< SecRule &ARGS "@gt 1023" "phase:2,t:none,deny,log,auditlog,status:403,msg:'Too many arguments in request',id:'960335',severity:'4'"
---
> SecRule &ARGS "@gt 255" "phase:2,t:none,deny,log,auditlog,status:403,msg:'Too many arguments in request',id:'960335',severity:'4'"
http://ls.net/admin/user/permissions was failing with error 403