diff --git a/module/execution/control.php b/module/execution/control.php
index b5a72a88ca..5f50f66ce3 100644
--- a/module/execution/control.php
+++ b/module/execution/control.php
@@ -2985,7 +2985,7 @@ class execution extends control
 
         $this->loadModel('project');
         $project = $this->project->getByID($this->session->project);
-        if($project->model == 'waterfall') $this->lang->executionCommon = $this->lang->project->stage;
+        if(!empty($project->model) and $project->model == 'waterfall') $this->lang->executionCommon = $this->lang->project->stage;
 
         $this->view->fileName = (in_array($status, array('all', 'undone')) ? $this->lang->execution->$status : $this->lang->execution->statusList[$status]) . $this->lang->executionCommon;