Unfair to stop miscarriage of justice (8,6)

I believe the answer is:

wrongful arrest

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'unfair to stop miscarriage of justice' is the definition.
I can't tell whether this definition defines the answer.

'unfair to stop' is the wordplay.
'unfair' becomes 'wrongful' (I am not sure about this - if you are sure you should believe this answer much more).
'to stop' becomes 'arrest' (arrest is a kind of stop).
'wrongful'+'arrest'='WRONGFUL ARREST'

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I've seen this clue in The Daily Express.

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