[development] warning: Missing argument 1

Hello, I have strange errors(warnings) with hook_access in 6.15: function EmMarketing_access($op, $node, $account) { } Getting these in admin interface: warning: Missing argument 1 for EmMarketing_access() in /Applications/MAMP/htdocs/drupal-6.15/modules/EmMarketing/EmMarketing.module on line 158. warning: Missing argument 2 for EmMarketing_access() in /Applications/MAMP/htdocs/drupal-6.15/modules/EmMarketing/EmMarketing.module on line 158. warning: Missing argument 3 for EmMarketing_access() in /Applications/MAMP/htdocs/drupal-6.15/modules/EmMarketing/EmMarketing.module on line 158. Probably something goes wrong in hook_menu? Mising some values? Thank you in advance, Ktt