Mozilla will automatically change the default search engine in Firefox from Google to Yahoo for most U.S. users when it updates the browser this month.
Firefox 34 is to launch later today or perhaps tomorrow, and may include the search engine switch.
All U.S. Firefox users who have previously left Google as the default search engine will see Yahoo as the new search engine, Mozilla said last week.
“[The] announcement regarding Yahoo only affects users of our en-US build who were using Firefox’s pre-selected default search provider,” said Chad Weiner, director of product management, in an email reply to questions. “Firefox users who have explicitly chosen a different search provider as their default will continue with that setting.”