diff --git a/lib/pushnotificationsservice.js b/lib/pushnotificationsservice.js
index 96231c6..3c8990e 100644
--- a/lib/pushnotificationsservice.js
+++ b/lib/pushnotificationsservice.js
@@ -124,7 +124,7 @@ PushNotificationsService.prototype._sendPushNotifications = function(notificatio
               "data": {
                 "title": content.plain.subject,
                 "message": content.plain.body,
-                "walletId": sjcl.hash.sha256.hash(notification.walletId),
+                "walletId": sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(notification.walletId)),
                 "notId": Math.floor(Math.random() * 100000) + 1
               }
             };
@@ -135,7 +135,7 @@ PushNotificationsService.prototype._sendPushNotifications = function(notificatio
               },
               "sound": "default",
               "payload": {
-                "walletId": sjcl.hash.sha256.hash(notification.walletId)
+                "walletId": sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(notification.walletId))
               }
             };
             return next(err, opts);