used as a humorous suggestion to leave well enough alone US,1961
“If it ain’t broke, don’t fix it” is the attitude of players and fans. — FinancialTimes, p. 6, 15 February 1990
Taking an if it ain’t broke, don’t fix it attitude, NCUA Chairman Roger W. Jepsen said the agency already provides several forums for credit unions[.] — NCUAWatch, p. 1, 25 October 1993