diff --git a/grade/report/grader/ajax_callbacks.php b/grade/report/grader/ajax_callbacks.php
index 463f1d6e245..2292e280e85 100644
--- a/grade/report/grader/ajax_callbacks.php
+++ b/grade/report/grader/ajax_callbacks.php
@@ -46,7 +46,7 @@ switch ($action) {
         if (!empty($userid) && !empty($itemid) && $newvalue !== false && !empty($type)) {
             // Save the grade or feedback
             if (!$grade_item = grade_item::fetch(array('id'=>$itemid, 'courseid'=>$courseid))) { // we must verify course id here!
-                print_error('invalidgradeitmeid');
+                print_error('invalidgradeitemid');
             }
 
             /**
diff --git a/grade/report/grader/lib.php b/grade/report/grader/lib.php
index 8612958d5b9..ec1abec8c06 100644
--- a/grade/report/grader/lib.php
+++ b/grade/report/grader/lib.php
@@ -197,7 +197,7 @@ class grade_report_grader extends grade_report {
             }
 
             if (!$gradeitem = grade_item::fetch(array('id'=>$itemid, 'courseid'=>$this->courseid))) { // we must verify course id here!
-                print_error('invalidgradeitmeid');
+                print_error('invalidgradeitemid');
             }
 
             // Pre-process grade
diff --git a/lang/en/error.php b/lang/en/error.php
index ce65d59cafe..861f5b582a3 100644
--- a/lang/en/error.php
+++ b/lang/en/error.php
@@ -287,6 +287,7 @@ $string['invalidfiletype'] = '"{$a}" is not a valid file type';
 $string['invalidformatpara'] = 'Incorrect format for choose parameter';
 $string['invalidformdata'] = 'Incorrect form data';
 $string['invalidfunction'] = 'Incorrect function';
+$string['invalidgradeitemid'] = 'Incorrect grade item id';
 $string['invalidgradeitmeid'] = 'Incorrect grade item id';
 $string['invalidgroupid'] = 'Incorrect group id specified';
 $string['invalidipformat'] = 'Invalid IP address format';