How to reset default search engine in firefox address bar?

Firefox has come with google as its default search engine, but sometime because of some software, it changes to other search engines such as Ask.com. Recently, I myself faced this problem and thought to share with you.

While we could easily change search engine in the right hand side toolbar by clicking the icon of current search engine and then clicking manage search engine, but in the case of url address bar, we need to open about:config from url. It is very easy to do and three steps procedure:

1. Type about:config  in your url bar and press enter
2. Click on I will be carefull I promise
3. Search for browser.search , Right click and Reset it to default. That's it!

I hope that helped!