diff --git a/backup/moodle2/restore_activity_task.class.php b/backup/moodle2/restore_activity_task.class.php
index 19a0d76e3b3..687a54508e9 100644
--- a/backup/moodle2/restore_activity_task.class.php
+++ b/backup/moodle2/restore_activity_task.class.php
@@ -246,16 +246,6 @@ abstract class restore_activity_task extends restore_task {
         }
     }
 
-    /**
-     * Given a commment area, return the itemname that contains the itemid mappings
-     *
-     * By default both are the same (commentarea = itemname), so return it. If some
-     * module uses a different approach, this method can be overriden in its taks
-     */
-    public function get_comment_mapping_itemname($commentarea) {
-        return $commentarea;
-    }
-
     /**
      * Define (add) particular steps that each activity can have
      */
diff --git a/backup/util/plan/restore_task.class.php b/backup/util/plan/restore_task.class.php
index 5b22b4bd3d5..e5abaca396c 100644
--- a/backup/util/plan/restore_task.class.php
+++ b/backup/util/plan/restore_task.class.php
@@ -95,6 +95,19 @@ abstract class restore_task extends base_task {
         return $this->plan->get_info()->original_system_contextid;
     }
 
+    /**
+     * Given a commment area, return the itemname that contains the itemid mappings
+     *
+     * By default, both are the same (commentarea = itemname), so return it. If some
+     * plugins use a different approach, this method can be overriden in its task.
+     *
+     * @param string $commentarea area defined for this comment
+     * @return string itemname that contains the related itemid mapping
+     */
+    public function get_comment_mapping_itemname($commentarea) {
+        return $commentarea;
+    }
+
     /**
      * If the task has been executed, launch its after_restore()
      * method if available