if it ain't broke, don't fix it

if it ain't broke, don't fix it

(spoken) also if it's not broke, don't fix it
it is a mistake to try to improve something that works He hasn't made a lot of changes to the team since taking over as head coach, figuring if it ain't broke, don't fix it.
See also: fix, if

If it ain't broke, don't fix it.

something that you say which means if a system or method works well there is no reason to change it We're happy with our exam system in Scotland, and as they say, if it ain't broke, don't fix it.
See also: fix, if
References in periodicals archive ?
McTEER: As for structure, if it ain't broke, don't fix it.
The book works, so it's the old adage: If it ain't broke, don't fix it.
As the old saying goes: If it ain't broke, don't fix it.
As the saying goes, if it ain't broke, don't fix it.
To which Quarterman answers in the gentlemanly tones used by all involved in the debate, ``Let me quote an old Texas adage: If it ain't broke, don't fix it.
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