Major bug Google Search

When I search with the Google search bar, and I press enter, I automatically go to Yahoo with the results of the word "true". Any search, will result in this. So I type, and it will go to this: https://nl.search.yahoo.com/yhs/search?hspart=domaindev&hsimp=yhs-delfia&p=true&type=01__alt__ddc_nicetab_live