Mozilla and Yahoo are teaming up to make a search engine experience that will not include Google.

A five-year deal between Yahoo and Mozilla will begin in December. The deal will make Yahoo the default search engine for Mozilla web browsers.

Mozilla is going away from Google and create a "new search engine experience" with Yahoo in the U.S.

The search engine experience is striving to be "clean and modern" and will reflect ideas from Mozilla employees and designers.

"Google has been the Firefox global search default since 2004. Our agreement came up for renewal this year, and we took this as an opportunity to review our competitive strategy and explore our options," Chris Beard, Mozilla's CEO said in a statement Wednesday. "We are excited to partner with Yahoo to bring a new, re-imagined Yahoo search experience to Firefox users in the U.S. featuring the best of the Web, and to explore new innovative search and content experiences together." 

Yahoo's CEO Marissa Mayer applauded the idea as well. 

"Search is an area of investment, opportunity and growth for us. This partnership helps to expand our reach in search and also gives us an opportunity to work closely with Mozilla to find ways to innovate more broadly in search, communications, and digital content," Mayer said.

Currently, Yahoo actually is powered by Microsoft's Bing. It then edits the results and ranks it in the way it prefers. It's likely that they will keep this behind-the-scenes partnership with Bing.

Of course, users can switch their default search engines on Mozilla back to Google very quickly, but most users typically leave those settings alone.

Mozilla owns about 15% of the U.S. browser market. Other browsers come from Internet Explorer, Chrome and Safari, as well as others.

What do you think of Mozilla and Yahoo? Which browser do you use? Leave us a comment below and let us know.