diff --git a/biscuit/apps/chronos/views.py b/biscuit/apps/chronos/views.py
index 07cafcca56b239ba7bb2341f35dbad961f5a84d6..08313d684721d51c5708cfcce5cecb8ca06630a5 100644
--- a/biscuit/apps/chronos/views.py
+++ b/biscuit/apps/chronos/views.py
@@ -22,7 +22,7 @@ from .tables import LessonsTable
 
 
 @login_required
-def timetable(request: HttpRequest, year: Optional[int], week: Optional[int] = None) -> HttpResponse:
+def timetable(request: HttpRequest, year: Optional[int] = None, week: Optional[int] = None) -> HttpResponse:
     context = {}
 
     if year and week: