diff --git a/module/task/control.php b/module/task/control.php
index 293bf51d57..0a7890d622 100644
--- a/module/task/control.php
+++ b/module/task/control.php
@@ -177,6 +177,8 @@ class task extends control
         $members          = $this->project->getTeamMemberPairs($projectID, 'nodeleted');
         $showAllModule    = isset($this->config->project->task->allModule) ? $this->config->project->task->allModule : '';
         $moduleOptionMenu = $this->tree->getTaskOptionMenu($projectID, 0, 0, $showAllModule ? 'allModule' : '');
+
+        /* Fix bug #3381. When the story module is the root module. */
         if($storyID)
         {
            $task->module = $this->dao->findByID($storyID)->from(TABLE_STORY)->fetch('module');