diff --git a/Application/Admin/Controller/TimingController.class.php b/Application/Admin/Controller/TimingController.class.php
index 540ced5e8..14d431bde 100644
--- a/Application/Admin/Controller/TimingController.class.php
+++ b/Application/Admin/Controller/TimingController.class.php
@@ -349,6 +349,11 @@ class TimingController extends AdminController {
         echo "-------------------------------------------------------------\n";
 
         $startTime = strtotime("20190829");
+
+        if (I("start_time")=="yesterday") {
+            $startTime = strtotime(date("Y-m-d",strtotime("-1 day")));
+        }
+
         $endTime = time();
 
         if (I("start_time")) {