make an exception
US /meɪk ən ɪkˈsep.ʃən/
UK /meɪk ən ɪkˈsep.ʃən/

1.
to allow someone or something to be different from the usual rule or practice
:
•
We usually don't allow late submissions, but we'll make an exception for you this time.
•
The manager decided to make an exception and allow the dog inside the restaurant.