diff --git a/lib/api/api.class.php b/lib/api/api.class.php
index 99ec4e2880..f5e1b00550 100755
--- a/lib/api/api.class.php
+++ b/lib/api/api.class.php
@@ -99,7 +99,7 @@ class ztclient
             $controlAPI = $this->zentao->root . $module . $this->zentao->requestFix . $method . $this->zentao->requestFix;
             if($vars)
             {
-                $vars = parse_str($vars);
+                parse_str($vars, $vars);
                 foreach($vars as $var) $controlAPI .= $var . $this->zentao->requestFix;
             }
             $controlAPI = rtrim($controlAPI, $this->zentao->requestFix) . '.json';
diff --git a/module/task/control.php b/module/task/control.php
index f48081ef92..c6c47eabff 100644
--- a/module/task/control.php
+++ b/module/task/control.php
@@ -173,11 +173,18 @@ class task extends control
         }
 
         $users            = $this->loadModel('user')->getPairs('noclosed|nodeleted');
-        $moduleIdList     = $this->tree->getAllChildID($moduleID);
-        $stories          = $this->story->getProjectStoryPairs($projectID, 0, 0, $moduleIdList);
         $members          = $this->project->getTeamMemberPairs($projectID, 'nodeleted');
         $moduleOptionMenu = $this->tree->getTaskOptionMenu($projectID);
 
+        /* Fix bug #2737. When moduleID is not story module. */
+        $moduleIdList = array();
+        if($moduleID)
+        {
+            $moduleID     = $this->tree->getStoryModule($moduleID);
+            $moduleIdList = $this->tree->getAllChildID($moduleID);
+        }
+        $stories = $this->story->getProjectStoryPairs($projectID, 0, 0, $moduleIdList);
+
         $title      = $project->name . $this->lang->colon . $this->lang->task->create;
         $position[] = html::a($taskLink, $project->name);
         $position[] = $this->lang->task->common;