juste au cas où and au cas où

juste au cas où and au cas où

Hello, In the examples given juste au cas où and  au cas où both translate as just in case when at the end of a sentence. Is there a way to know when to add juste, or is it entirely optional? Thanks.
Asked 1 year ago

I believe it is entirely optional, just like in English

-- Chris (not a native speaker). 

Thanks Chris. 
Being pedantic, "juste" in this sense is an Anclicism.  Ce n'est pas juste!

juste au cas où and au cas où

Hello, In the examples given juste au cas où and  au cas où both translate as just in case when at the end of a sentence. Is there a way to know when to add juste, or is it entirely optional? Thanks.

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