Self-Service Registration has parameters in address bar

After successful user activation via email, the redirect urls sends them back to my webpage.
This is expected
BUT

the url in the address bar is:
https://mywebsite/?type_hint=ACTIVATION&session_hint=AUTHENTICATED&login_hint=xxxx%40xxx.com

and this creates an ERROR 400: redirect_uri not whitelisted error when i try to sign in

am i meant to do something with these parameters?