defsearch keeps getting reset to google?

[JohnnyCashout]

I have duckduckgo set as preferred search engine in firefox preferences, and I :set defsearch=duckduckgo

it works fine for a while, maybe a day. then when I start firefox again, defsearch has been reset to Google again. How can I make this setting stick?

[Eugène]

Hi,

You can save your configuration with this command:

:mkp[entadactylrc][!] [file]

        Write current key mappings and changed options to [file]. If no
        [file] is specified then ~/.pentadactylrc is written unless this file
        already exists. The special version :mkpentadactylrc! will overwrite
        [file] if it exists.

[JohnnyCashout]

thanks