diff --git a/lang/en/grades.php b/lang/en/grades.php
index 8cd9000eb4b..42ebc37f851 100644
--- a/lang/en/grades.php
+++ b/lang/en/grades.php
@@ -703,7 +703,7 @@ $string['recovergradesdefault_help'] = 'By default recover old grades when re-en
 $string['refreshpreview'] = 'Refresh preview';
 $string['regradeanyway'] = 'Regrade anyway';
 $string['removeallcoursegrades'] = 'Delete all grades';
-$string['removeallcoursegrades_help'] = 'If ticked, all grade items which were manually added to the gradebook will be deleted, together with grades and data on overridden, excluded, hidden and locked grades. Only grade items associated with activities will remain.';
+$string['removeallcoursegrades_help'] = 'If ticked, all grade items and grades that were manually added to the gradebook will be deleted, as well as data on overridden, excluded, hidden and locked grades. Only grade items and grades associated with activities will remain.';
 $string['removeallcourseitems'] = 'Delete all items and categories';
 $string['removeallcourseitems_help'] = 'If ticked, all categories and grade items which were manually added to the gradebook will be deleted, together with grades and data on overridden, excluded, hidden and locked grades. Only grade items associated with activities will remain.';
 $string['report'] = 'Report';