diff --git a/modules/notification/notification.service.js b/modules/notification/notification.service.js
index 40b0497..4b44c80 100644
--- a/modules/notification/notification.service.js
+++ b/modules/notification/notification.service.js
@@ -17,8 +17,8 @@ const extraMethods = {
             title: title,
             body: body,
             userId: userId,
-            ttl: ttl || undefined,
-            priority: priority || 'default',
+            ttl: ttl ? ttl : undefined,
+            priority: priority ? priority : 'default',
             recipients: recipients,
             data: data,
         });