diff --git a/admin_manual/configuration_database/bigint_identifiers.rst b/admin_manual/configuration_database/bigint_identifiers.rst
index 5fba8d2ab..ee6faf639 100644
--- a/admin_manual/configuration_database/bigint_identifiers.rst
+++ b/admin_manual/configuration_database/bigint_identifiers.rst
@@ -19,3 +19,6 @@ or otherwise ask for confirmation, before performing the heavy actions::
     sudo -u www-data ./occ db:convert-filecache-bigint
     This can take up to hours, depending on the number of files in your instance!
     Continue with the conversion (y/n)? [n]
+
+.. note:: Similar to a normal update, you should shutdown your apache or nginx server or enable maintenance
+          mode before running the command to avoid issues with your sync clients.