diff --git a/seminar/treelib.py b/seminar/treelib.py
index c1b5531b..1aa096bb 100644
--- a/seminar/treelib.py
+++ b/seminar/treelib.py
@@ -109,7 +109,7 @@ def all_children(node):
 # Najdi dalšího bratra nějakého typu, nebo None.
 # hledá i podtřídy, i.e. get_next_brother_of_type(neco, TreeNode) je prostě succ.
 def get_next_brother_of_type(node, type):
-	for current in right_brothers(node)
+	for current in right_brothers(node):
 		if isinstance(current, type):
 			return current