Proverb[edit]

if it ain’t broke, don’t fix it

1. Leave something alone; avoid attempting to correct, fix, or improve what is already sufficient (often with an implication that the attempted improvement is risky and might backfire).

   I know it’s an ugly looking antenna, but you know what they say: If it ain’t broke, don’t fix it.

    

   informal

   if something is reasonably successful or effective, there is no need to change or replace it.

   "Stick with the plan! If it ain't broke don't fix it"

    

   If It Is Working Dont Change

   c2.com/cgi/wiki?IfItIsWorkingDontChange

   1. Cached
   2. Similar

   Many people advocate that if it is working, you should not change it. ... An engineer says "we need to repair the bridge; it's showing its age" and the manager says "it's still working; don't change anything"? ... If there are developers and managers that committed to believing that a broken process is working, it might be time to ...