diff --git a/modules/builder.py b/modules/builder.py
index 9f8c0e6e..93813d53 100644
--- a/modules/builder.py
+++ b/modules/builder.py
@@ -21,7 +21,7 @@ class CollectionBuilder:
         self.filters = []
         self.posters = []
         self.backgrounds = []
-        self.schedule = None
+        self.schedule = ""
         current_time = datetime.now()
         current_year = current_time.year