diff --git a/src/finam/schedule.py b/src/finam/schedule.py
index 6e1d5c6f17ccbbf3f59ce323d93eacbecc453c90..df7bb661de47551c82815d813c1b9ca4e438e763 100644
--- a/src/finam/schedule.py
+++ b/src/finam/schedule.py
@@ -87,7 +87,8 @@ class Composition(Loggable):
         "Compositions are now initialized when created. To be removed in v1.0.",
         version="0.6",
     )
-    def initialize(self): ...
+    def initialize(self):
+        ...
 
     def __init__(
         self,