diff --git a/src/Appwrite/Platform/Workers/Messaging.php b/src/Appwrite/Platform/Workers/Messaging.php
index 5bc1560166..57a0e5f648 100644
--- a/src/Appwrite/Platform/Workers/Messaging.php
+++ b/src/Appwrite/Platform/Workers/Messaging.php
@@ -398,7 +398,7 @@ class Messaging extends Action
                 $credentials['teamId'],
                 $credentials['bundleId'],
             ),
-            'fcm' => new FCM($credentials['serviceAccountJSON']),
+            'fcm' => new FCM(\json_encode($credentials['serviceAccountJSON'])),
             default => null
         };
     }