diff --git a/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt b/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt
index 8cc2a9f..4fca49f 100644
--- a/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt
+++ b/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt
@@ -30,7 +30,7 @@ class Tree(var value: Int) {
     }
 
     fun height(): Int {
-        return 1 + (children.map { it.size() }.max() ?: 0)
+        return 1 + (children.map { it.height() }.max() ?: 0)
     }
 
     fun add(value: Int) {