diff --git a/apns2/client.py b/apns2/client.py
index baacd61..0947350 100644
--- a/apns2/client.py
+++ b/apns2/client.py
@@ -117,7 +117,11 @@ def send_notification_async(self, token_hex: str, notification: Payload, topic:
                 inferred_push_type = NotificationType.Complication.value
             elif topic.endswith('.pushkit.fileprovider'):
                 inferred_push_type = NotificationType.FileProvider.value
-            elif any([notification.alert, notification.badge, notification.sound]):
+            elif any([
+                notification.alert is not None,
+                notification.badge is not None,
+                notification.sound is not None,
+            ]):
                 inferred_push_type = NotificationType.Alert.value
             else:
                 inferred_push_type = NotificationType.Background.value