No flash message with devise

I'm trying to remove a flash message and I'm using devise for t开发者_开发知识库he user management. Setting the value to null or an empty string just throws an error in the notice, removing it from the devise.en.yml gives a similar error.

Removing the notice from erb file isn't an option, I just want it to not display at all. Anyone got any ideas?

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You could call flash.discard(:notice) in an after filter of the controller. That should clear the flash message.