diff --git a/admin_manual/configuration_server/config_sample_php_parameters.rst b/admin_manual/configuration_server/config_sample_php_parameters.rst
index ba2a6f733..910031814 100644
--- a/admin_manual/configuration_server/config_sample_php_parameters.rst
+++ b/admin_manual/configuration_server/config_sample_php_parameters.rst
@@ -549,7 +549,7 @@ Available values:
                 expire rules. Please refer to Files_versions online documentation
                 for more info.
   ``D, auto``   keep versions at least for D days, apply expire rules to all
-                versions that older than D days
+                versions that are older than D days
 * ``auto, D``   delete all versions that are older than D days automatically,
                 delete other versions according to expire rules
 * ``D1, D2``    keep versions for at least D1 days and delete when exceeds D2 days