NoScript in Spanish

[user]

Hello, I installed noscript suite in firefox for linux and the noscript suite install in spanish, how can I change the language? Im running the latest version of arch linux (in english) and the latest version of firefox (in english) and know no spanish, I have searched around on the web but have been unable to find a fix for this. Any answers appreciated, thanks for your time.
-user

[barbaz]

Are you using the official Mozilla build of Firefox (the one download from https://www.mozilla.org/firefox/all/) or the Arch linux distribution Firefox build?

Is the language correct in a clean profile?

[barbaz]

Also what is the value of about:config > general.useragent.locale ?