diff --git a/seminar/models/odevzdavatko.py b/seminar/models/odevzdavatko.py
index 2d937a41..71b6fb51 100644
--- a/seminar/models/odevzdavatko.py
+++ b/seminar/models/odevzdavatko.py
@@ -171,7 +171,7 @@ class Hodnoceni(bm.SeminarModelBase):
 
 	@property
 	def body_max(self):
-		if not isinstance(Hodnoceni.objects.first().problem, am.Uloha):
+		if not isinstance(self.problem, am.Uloha):
 			return None
 		return self.problem.uloha.max_body