1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index aa5d89a9ac..e6c8965a9d 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -727,6 +727,9 @@ class AuthHandler(BaseHandler):
             if canonical_user_id:
                 defer.returnValue((canonical_user_id, None))
 
+        if login_type == LoginType.SSO:
+            known_login_type = True
+
         if not known_login_type:
             raise SynapseError(400, "Unknown login type %s" % login_type)