Support a revolutionary complaint (8)

I believe the answer is:

backache

'complaint' is the definition.
(I've seen this before)

'support a revolutionary' is the wordplay.
'support' becomes 'back' (to back is to support or endorse).
'revolutionary' becomes 'Che' (Che Guevara the Marxist revolutionary).
'back'+'a'+'che'='BACKACHE'

(Other definitions for backache that I've seen before include "Pain in rear of body" , "Eg, lumbar pain" , "Spinal pain" , "Eg, lumbago" , "common complaint" .)

I've seen this clue in The Times.

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