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

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

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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