diff --git a/src/Appwrite/Platform/Workers/Functions.php b/src/Appwrite/Platform/Workers/Functions.php
index bf80f94942..c5d1c7a976 100644
--- a/src/Appwrite/Platform/Workers/Functions.php
+++ b/src/Appwrite/Platform/Workers/Functions.php
@@ -407,10 +407,12 @@ class Functions extends Action
         $headers['x-appwrite-continent-code'] = '';
         $headers['x-appwrite-continent-eu'] = 'false';
         $scheduledAt = $headers['x-appwrite-scheduled-at'] ?? '';
-        $executedAt = new \DateTime();
-        $headers['x-appwrite-executed-at'] = $executedAt->format('Y-m-d\TH:i:s.v\Z');
-        $delay = $executedAt->getTimestamp() - (new \DateTime($scheduledAt))->getTimestamp();
-        $headers['x-appwrite-execution-delay'] = (string)floor($delay);
+        if (!empty($scheduledAt)) {
+            $executedAt = new \DateTime();
+            $headers['x-appwrite-executed-at'] = $executedAt->format('Y-m-d\TH:i:s.v\Z');
+            $delay = $executedAt->getTimestamp() - (new \DateTime($scheduledAt))->getTimestamp();
+            $headers['x-appwrite-execution-delay'] = (string)floor(max(0, $delay));
+        }
 
         /** Create execution or update execution status */
         $execution = $dbForProject->getDocument('executions', $executionId ?? '');