diff --git a/admin_manual/configuration_server/config_sample_php_parameters.rst b/admin_manual/configuration_server/config_sample_php_parameters.rst
index 8ab867fe707..066c19ee158 100644
--- a/admin_manual/configuration_server/config_sample_php_parameters.rst
+++ b/admin_manual/configuration_server/config_sample_php_parameters.rst
@@ -117,6 +117,10 @@ you use SQLite.
 
 Default to ``data/`` in the Nextcloud directory.
 
+.. warning:: This parameter should not be changed after finishing the initial
+	installation of Nextcloud. Doing so might lead to side effects and affect 
+	several features.
+
 version
 ^^^^^^^