You need to set keyword. Enabled = false on the about:config page to disable searching via the location bar.In Firefox settings>Search>Search Suggestions, uncheck Show search suggestions in address bar results and ahead of browsing history. In about:config, toggle the following preference to false to disable searching from the address bar unless you click one of the search engine options. The Search panel in Firefox Settings lets you customize your search options. Press the "Add" button and fill in the name, search engine url and a keyword (optional). Just start typing in the address bar. Suggestions from your browsing history, bookmarks, and tabs will be listed, underneath what you've typed. Just start typing in the address bar. Suggestions from your browsing history, bookmarks, and tabs will be listed, underneath what you've typed.