diff --git a/lib/grade/constants.php b/lib/grade/constants.php
index 6c20f564be2..ba9fd82b1fd 100644
--- a/lib/grade/constants.php
+++ b/lib/grade/constants.php
@@ -112,11 +112,6 @@ define('GRADE_UPDATE_FAILED', 1);
  */
 define('GRADE_UPDATE_MULTIPLE', 2);
 
-/**
- * GRADE_UPDATE_DELETED - Grade item deleted (MDL-31362)
- */
-define('GRADE_UPDATE_ITEM_DELETED', 3);
-
 /**
  * GRADE_UPDATE_DELETED - Grade item cannot be updated as it is locked
  */
diff --git a/lib/gradelib.php b/lib/gradelib.php
index b63464f4dc5..8de67cf103d 100644
--- a/lib/gradelib.php
+++ b/lib/gradelib.php
@@ -56,7 +56,7 @@ require_once($CFG->libdir . '/grade/grade_outcome.php');
  * @param int    $itemnumber Most probably 0. Modules can use other numbers when having more than one grade for each user
  * @param mixed  $grades Grade (object, array) or several grades (arrays of arrays or objects), NULL if updating grade_item definition only
  * @param mixed  $itemdetails Object or array describing the grading item, NULL if no change
- * @return int Returns GRADE_UPDATE_OK, GRADE_UPDATE_FAILED, GRADE_UPDATE_MULTIPLE, GRADE_UPDATE_ITEM_DELETED (MDL-31362) or GRADE_UPDATE_ITEM_LOCKED
+ * @return int Returns GRADE_UPDATE_OK, GRADE_UPDATE_FAILED, GRADE_UPDATE_MULTIPLE or GRADE_UPDATE_ITEM_LOCKED
  */
 function grade_update($source, $courseid, $itemtype, $itemmodule, $iteminstance, $itemnumber, $grades=NULL, $itemdetails=NULL) {
     global $USER, $CFG, $DB;
diff --git a/mod/lti/servicelib.php b/mod/lti/servicelib.php
index 05acae505f5..18d58012fdf 100644
--- a/mod/lti/servicelib.php
+++ b/mod/lti/servicelib.php
@@ -192,7 +192,7 @@ function lti_delete_grade($ltiinstance, $userid) {
 
     $status = grade_update(LTI_SOURCE, $ltiinstance->course, LTI_ITEM_TYPE, LTI_ITEM_MODULE, $ltiinstance->id, 0, $grade, array('deleted'=>1));
 
-    return $status == GRADE_UPDATE_OK || $status == GRADE_UPDATE_ITEM_DELETED; //grade_update seems to return ok now, but could reasonably return deleted in the future
+    return $status == GRADE_UPDATE_OK;
 }
 
 function lti_verify_message($key, $sharedsecrets, $body, $headers = null) {