Correct side (5)
I believe the answer is:
right
This clue is a double definition.
'correct' is the first definition.
(right can mean correct)
'side' is the second definition.
(Other definitions for right that I've seen before include "The Tory side" , "Genuine" , "Conservative - correct" , "The hand to the east when facing north" , "Fitting; entitlement" .)