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When I begin to type "m" in the location bar, I simply cannot -- it always changes it to an "h". Simply put, I can't type a simple URL. What gives? (FF 7.0.1)

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Basically, I'm trying to go to a mobile version of my own site to see something, so I start typing, "m.mysite..." and it just won't let me do it. I have to open Notepad, type the URL, then paste it in the URL bar. I must be breaking someone's new self-imposed rule that typing a URL with an 'm' isn't "standards-compliant" for a non-mobile device (just a lame jab, sorry, I'm sort of frustrated here).

Basically, I'm trying to go to a mobile version of my own site to see something, so I start typing, "m.mysite..." and it just won't let me do it. I have to open Notepad, type the URL, then paste it in the URL bar. I must be breaking someone's new self-imposed rule that typing a URL with an 'm' isn't "standards-compliant" for a non-mobile device (just a lame jab, sorry, I'm sort of frustrated here).

Chosen solution

Do you have enabled auto-fill for the location bar?

You can check the pref browser.urlbar.autoFill on the about:config page.

You can also make the protocol visible.

You can set the pref browser.urlbar.trimURLs to false on the about:config page to see the http: protocol.


You can set the pref browser.urlbar.formatting.enabled to false on the about:config page to disable the highlighting of the domain and see the full URL more clearly.


  • bug 678352 - 'h' entered as first letter in location bar is overwritten with 'w' when browser.urlbar.autoFill is true
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Chosen Solution

Do you have enabled auto-fill for the location bar?

You can check the pref browser.urlbar.autoFill on the about:config page.

You can also make the protocol visible.

You can set the pref browser.urlbar.trimURLs to false on the about:config page to see the http: protocol.


You can set the pref browser.urlbar.formatting.enabled to false on the about:config page to disable the highlighting of the domain and see the full URL more clearly.


  • bug 678352 - 'h' entered as first letter in location bar is overwritten with 'w' when browser.urlbar.autoFill is true
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This still seems like a bug since wouldn't an auto-fill only fill values that matched what you're typing? This seems like a case where it's filling in a value that it shouldn't perhaps.