diff --git a/src/github.com/matrix-org/dendrite/clientapi/routing/register.go b/src/github.com/matrix-org/dendrite/clientapi/routing/register.go
index b94f249af..d19c97b1a 100644
--- a/src/github.com/matrix-org/dendrite/clientapi/routing/register.go
+++ b/src/github.com/matrix-org/dendrite/clientapi/routing/register.go
@@ -304,7 +304,7 @@ func LegacyRegister(
 		}
 	}
 
-	if cfg.Matrix.RegistrationDisabled && r.Auth.Type != authtypes.LoginTypeSharedSecret {
+	if cfg.Matrix.RegistrationDisabled && r.Type != authtypes.LoginTypeSharedSecret {
 		return util.MessageResponse(403, "Registration has been disabled")
 	}