When I search by typing for an item on the address bar , the search is appearing on yahoo.com , but previously it was searching on google . I want to know how I can change this setting. I went to about:config and tried but it did not work .

Hi , When I search by typing for an item on the address bar , the search is appearing on yahoo.com , but previously it was searching on google . I want to know how I can change this setting. I went to about:config and tried but it did not work .