Conclusion about this compiler's correct (5)
I believe the answer is:
emend
'correct' is the definition.
(thesaurus)
'conclusion about this compiler's' is the wordplay.
'conclusion' becomes 'end' (end is a kind of conclusion).
'about' indicates putting letters inside.
'this compiler' becomes 'me' (the person who is writing these clues).
'end' placed around 'me' is 'EMEND'.
(Other definitions for emend that I've seen before include "would appear better" , "Alter something written to correct errors" , "do editorial work" , "Remove errors" , "Improve (writing)" .)