diff --git a/pylib/anki/storage.py b/pylib/anki/storage.py
index 7556298fb..f95722cfd 100644
--- a/pylib/anki/storage.py
+++ b/pylib/anki/storage.py
@@ -23,7 +23,7 @@ from anki.utils import intTime, isWin
 
 
 class ServerData:
-    minutes_west: Optional[int]
+    minutes_west: Optional[int] = None
 
 
 def Collection(