diff --git a/biscuit/apps/untis/parse.py b/biscuit/apps/untis/parse.py
index 482f0e6716b050a0f18face1f4a5d93a4ad23a32..be987c621cd6c07265f6fa1e7e45b2ba6d3a7529 100755
--- a/biscuit/apps/untis/parse.py
+++ b/biscuit/apps/untis/parse.py
@@ -221,7 +221,7 @@ def get_lesson_element_by_id_and_teacher(lesson_id, teacher, hour=None, weekday=
     try:
         lesson = get_lesson_by_id(lesson_id)
     except Exception:
-        return None
+        return None, None
     el = None
     i = 0
     print(lesson.elements)
diff --git a/biscuit/apps/untis/sub.py b/biscuit/apps/untis/sub.py
index 395c2c5a1687f6ba9189f15c3c7e854d8ea42211..cb195b93b04a49db57db96f0185d254ac7bb3eb9 100644
--- a/biscuit/apps/untis/sub.py
+++ b/biscuit/apps/untis/sub.py
@@ -83,8 +83,7 @@ class Substitution(object):
                 self.teacher_new = None
 
         self.lesson_element, self.room_old = get_lesson_element_by_id_and_teacher(self.lesson_id, self.teacher_old,
-                                                                                  self.lesson,
-                                                                                  self.date.weekday() + 1)
+                                                                                  self.lesson, self.date.weekday() + 1)
         # print(self.lesson)
         print(self.room_old)
         # Subject