diff --git a/pillar/auth/oauth.py b/pillar/auth/oauth.py
index 7ac93502..19b7fc81 100644
--- a/pillar/auth/oauth.py
+++ b/pillar/auth/oauth.py
@@ -75,7 +75,7 @@ class OAuthSignIn(metaclass=abc.ABCMeta):
 
     def get_callback_url(self):
         return url_for('users.oauth_callback', provider=self.provider_name,
-                       _external=True)
+                       _external=True, scheme=current_app.config['SCHEME'])
 
     @staticmethod
     def auth_code_from_request() -> str: