Correct current flowing back (4)
I believe the answer is:
edit
'correct' is the definition.
(thesaurus)
'current flowing back' is the wordplay.
'current' becomes 'tide' (I've seen this before).
'flowing back' is a reversal indicator.
'tide' written backwards gives 'EDIT'.
(Other definitions for edit that I've seen before include "Literally, arrange" , "Prepare text for publication" , "Be in charge (of paper)" , "modify text" , "Fix" .)