diff --git a/src/ui/main.gd b/src/ui/main.gd
index 6e38216..f5fc6c0 100644
--- a/src/ui/main.gd
+++ b/src/ui/main.gd
@@ -1312,7 +1312,7 @@ func _on_tree_selected() -> void:
 ## Auswahl (aus dem Viewport) im Baum mitmarkieren.
 func _mark_tree_selection(idx: int) -> void:
 	_tree_select_lock = true
-	_mark_tree_selection_walk(content_tree.root, idx)
+	_mark_tree_selection_walk(content_tree.get_root(), idx)
 	_tree_select_lock = false