Inbox sort order

I’ve somehow changed the sort order in  my inbox. It’s ordering messages by “From”. How can I change it back to date order?

Just click on top of the column “Received”, it will sort from ‘new to old’ , click again and it will sort ‘old to new’.  (I’m using the Dutch version, so I’m not sure about the column name)

If the sort order is by sender, click on Sorted by From  

and select the desired sort criteria.