diff --git a/app/index/controller/ProgramController.php b/app/index/controller/ProgramController.php
index 50fed17..5e652ee 100644
--- a/app/index/controller/ProgramController.php
+++ b/app/index/controller/ProgramController.php
@@ -131,7 +131,7 @@ class ProgramController extends BaseController
                 'p.id',
                 'p.title',
                 'p.desc',
-                'IF(p.icon IS NULL OR p.icon = "", c.icon, p.icon) as icon'
+                'COALESCE(p.icon, c.icon) as icon'
             ])
             ->order('p.id DESC')
             ->limit(3)