diff --git a/app/Http/Controllers/CharacteristicsController.php b/app/Http/Controllers/CharacteristicsController.php
index 181fedc..13f91c8 100644
--- a/app/Http/Controllers/CharacteristicsController.php
+++ b/app/Http/Controllers/CharacteristicsController.php
@@ -342,7 +342,7 @@ class CharacteristicsController extends Controller
             $charField = 'NIL';
         }
 
-        if ($expectedTime == null || $expectedTime == '' || $expectedTime == '0' || ! $expectedTime) {
+        if ($expectedTime == null || $expectedTime == '' || ($markedStatus == 'Marked' && $expectedTime == '0')) { //  || ! $expectedTime
             return response()->json([
                 'status_code' => 'ERROR',
                 'status_description' => "Expected time can't be empty or zero!",