diff --git a/customers/base/nextcloud-configmap.yml b/customers/base/nextcloud-configmap.yml
index 47d2659..f789037 100644
--- a/customers/base/nextcloud-configmap.yml
+++ b/customers/base/nextcloud-configmap.yml
@@ -26,7 +26,7 @@ data:
             ),
         ),
       'appstoreenabled' => false,
-      'config_is_read_only' => false,
+      'config_is_read_only' => true,
       'csrf.disabled' => true,
       'datadirectory' => '/var/www/html/data',
       'dbhost' => '{{MYSQL_HOST}}:{{MYSQL_PORT}}',