diff --git a/seminar/models.py b/seminar/models.py
index 48ac2e60..97fee733 100644
--- a/seminar/models.py
+++ b/seminar/models.py
@@ -1095,6 +1095,7 @@ class TreeNode(models.Model):
 	class Meta:
 		abstract = True
 	root = models.ForeignKey('self',
+		related_name="potomci_set",
 		null = True,
 		blank = False,
 		on_delete = models.SET_NULL, # Vrcholy s null kořenem jsou sirotci bez ročníku 
@@ -1105,6 +1106,7 @@ class TreeNode(models.Model):
 		on_delete=models.SET_NULL,
 		verbose_name="první potomek")
 	succ = models.ForeignKey('self',
+		related_name="prev",
 		null = True,
 		blank = True,
 		on_delete=models.SET_NULL,