Selected answers from the Dumb SEO Questions Facebook & G+ community.
Ryan Jones: if they`re showing in search console as 2 separate URLs with different clicks/impressions and you don`t have a canonical tag or redirect in place, you should put a redirect or canonical tag in place.
i think in this case it is only a canonical tag, no?
Ryan Jones: depending on your host you can change the settings in htaccess or your redirects file. if you`ve never done it before though, it`s not super straightforward. you may want to talk to your dev or your host to do it.