diff --git a/configs/oidc.config.php b/configs/oidc.config.php
index 76f2599..252d0d6 100644
--- a/configs/oidc.config.php
+++ b/configs/oidc.config.php
@@ -12,5 +12,6 @@
 	// Update *existing information* in Nextcloud backend
 	// (false = fail login if existing in other backend)
 	'soft_auto_provision' => false,
+	'allow_multiple_user_backends' => false,
   ],
 ];