diff --git a/zerver/tests/test_push_notifications.py b/zerver/tests/test_push_notifications.py
index a8c299fffe..367b7932d9 100644
--- a/zerver/tests/test_push_notifications.py
+++ b/zerver/tests/test_push_notifications.py
@@ -302,7 +302,10 @@ class PushBouncerNotificationTest(BouncerTestCase):
         payload = {
             "user_id": hamlet.id,
             "gcm_payload": {"event": "remove", "zulip_message_ids": many_ids},
-            "apns_payload": {"event": "remove", "zulip_message_ids": many_ids},
+            "apns_payload": {
+                "badge": 0,
+                "custom": {"zulip": {"event": "remove", "zulip_message_ids": many_ids}},
+            },
             "gcm_options": {},
         }
         with mock.patch(
@@ -335,7 +338,15 @@ class PushBouncerNotificationTest(BouncerTestCase):
         apple_push.assert_called_once_with(
             hamlet.id,
             [apple_token],
-            {"event": "remove", "zulip_message_ids": ",".join(str(i) for i in range(50, 250))},
+            {
+                "badge": 0,
+                "custom": {
+                    "zulip": {
+                        "event": "remove",
+                        "zulip_message_ids": ",".join(str(i) for i in range(50, 250)),
+                    }
+                },
+            },
             remote=server,
         )
         android_push.assert_called_once_with(
diff --git a/zilencer/views.py b/zilencer/views.py
index 50a5808d45..f7d65a6d3a 100644
--- a/zilencer/views.py
+++ b/zilencer/views.py
@@ -250,7 +250,10 @@ def remote_server_notify_push(
         user_id, android_devices, gcm_payload, gcm_options, remote=server
     )
 
-    apns_payload = truncate_payload(apns_payload)
+    if isinstance(apns_payload.get("custom"), dict) and isinstance(
+        apns_payload["custom"].get("zulip"), dict
+    ):
+        apns_payload["custom"]["zulip"] = truncate_payload(apns_payload["custom"]["zulip"])
     send_apple_push_notification(user_id, apple_devices, apns_payload, remote=server)
 
     return json_success(