diff --git a/lang/en_utf8/grades.php b/lang/en_utf8/grades.php
index 6ba20c7be7f..ac772f57dcf 100644
--- a/lang/en_utf8/grades.php
+++ b/lang/en_utf8/grades.php
@@ -7,6 +7,7 @@ $string['addcategory'] = 'Add Category';
 $string['addcategoryerror'] = 'Could not add category.';
 $string['addexceptionerror'] = 'Error occurred while adding exception for userid:gradeitem';
 $string['addfeedback'] = 'Add Feedback';
+$string['addidnumbers'] = 'Add id numbers';
 $string['additem'] = 'Add Grade Item';
 $string['addoutcomeitem'] = 'Add Outcome Item';
 $string['aggregateextracreditmeanall'] = 'Mean of all grades (extra credits)';
@@ -35,6 +36,7 @@ $string['aggregationview'] = 'Aggregation view';
 $string['allgrades'] = 'All grades by category';
 $string['allstudents'] = 'All Students';
 $string['autosort'] = 'Auto-sort';
+$string['availableidnumbers'] = 'Available id numbers';
 $string['average'] = 'Average';
 $string['averagesdecimalpoints'] = 'Decimals in column averages';
 $string['averagesdisplaytype'] = 'Column averages display type';