Tidy up intelligent directions (7)

I believe the answer is:

smarten

'tidy up' is the definition.

'intelligent directions' is the wordplay.
'intelligent' becomes 'smart' (similar in meaning).
'directions' becomes 'en' (east and north).
'smart'+'en'='SMARTEN'

(Other definitions for smarten that I've seen before include "Brighten (up)" , "Become bright, tidy and more efficient" , "Spruce up" , "Improve appearance" .)

I've seen this clue in The Daily Express.

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