about:config → keyword.enabled → set to false You'll have to prefix your searches with a key (in my case it's w for wikipedia, g for Google, and so on), but th

about:config → keyword.enabled → set to false You'll have to prefix your searches with a key (in my case it's w for wikipedia, g for Google, and so on), but that's what I prefer personally anyway. Also set browser.fixup.alternate.enabled to false to prevent Firefox from retrying whatever you have typed in with a .com suffix.