diff --git a/grade/export/ods/grade_export_ods.php b/grade/export/ods/grade_export_ods.php
index 5f254a719ed..c3d9c53cd22 100755
--- a/grade/export/ods/grade_export_ods.php
+++ b/grade/export/ods/grade_export_ods.php
@@ -37,7 +37,7 @@ class grade_export_ods extends grade_export {
 
         $export_tracking = $this->track_exports();
 
-        $strgrades = get_string('grades', 'grade');
+        $strgrades = get_string('grades', 'grades');
 
     /// Calculate file name
         $downloadfilename = clean_filename("{$this->course->shortname} $strgrades.ods");