diff --git a/recipes/db.py b/recipes/db.py
index ab4bca8..1ec524d 100644
--- a/recipes/db.py
+++ b/recipes/db.py
@@ -19,7 +19,7 @@ class Recipe(BaseModel):
     based_on_recipe: Optional[int] = None
 
     date_created: datetime.datetime = datetime.datetime.now()
-    created_by_id: int
+    created_by_id: Optional[int]
     created_by: Optional[Person] = None
 
     date_hidden: Optional[datetime.datetime] = None