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It seems you have a system which redirects users to the default page. When I try the site http://www.mercimamanboutique.com/ - It has a canonical http://www.mercimamanboutique.com/fr-fr/ - when I switch to German and go back to the same url it has a canonical http://www.mercimamanboutique.com/de-de/ The site seems to exist in https & http - may be better to redirect everything to https (although this is probably not related to the issue you encounter) Dirk Update:  I also noticed that the main rel alternate doesn't exist - http://www.mercimamanboutique.com/ is redirected to http://www.mercimamanboutique.com - I guess it's better not to use url's that are redirected but to use the final destination url