diff --git a/addons/project/models/project_task_recurrence.py b/addons/project/models/project_task_recurrence.py
index 7bed6b431a2..e229ec8b28d 100644
--- a/addons/project/models/project_task_recurrence.py
+++ b/addons/project/models/project_task_recurrence.py
@@ -221,7 +221,7 @@ class ProjectTaskRecurrence(models.Model):
                 children = []
                 # copy the subtasks of the original task
                 for child in task.child_ids:
-                    child_values = self._new_task_values(child)
+                    child_values = recurrence._new_task_values(child)
                     child_values['parent_id'] = new_task.id
                     children.append(child_values)
                 self.env['project.task'].create(children)