diff --git a/radicale/hook/rabbitmq/__init__.py b/radicale/hook/rabbitmq/__init__.py
index 2cefb3c8..4953a33e 100644
--- a/radicale/hook/rabbitmq/__init__.py
+++ b/radicale/hook/rabbitmq/__init__.py
@@ -1,4 +1,5 @@
 import pika
+
 from radicale import hook
 from radicale.hook import HookNotificationItem