Hello. I have a problem with Joomla K2. When I write wrong url on the standart joomla article page Joomla gives 404 page. All work correctly. But if I write wrong url on the K2 article page then nothing happens. Example:

mysite.com/category_name/article_name — This is my article
mysite.com/category_name/article_nameblablabla — Nothing happens. And there should be an 404 error.

How do I make if the url on the Joomla K2 article page is incorrect CMS will make 404 error just like usually on any other page of the website?