diff --git a/ranked_tree.js b/ranked_tree.js
index a68a028..c504c90 100644
--- a/ranked_tree.js
+++ b/ranked_tree.js
@@ -143,18 +143,12 @@ class RankedTree {
             this.transplant(node, node.left);
         } else {
             let successor = nodeMinimum(node.right);
-            parent = successor.parent != node ? successor.parent : successor;
 
-            if (successor.parent != node) {
-                parent = successor.right ? successor.right : successor.parent;
-                this.transplant(successor, successor.right);
-                successor.right = node.right;
-                successor.right.parent = successor;
-            }
+            node.value = successor.value;
+            successor.value = null;
+            this.record();
 
-            this.transplant(node, successor);
-            successor.left = node.left;
-            node.left.parent = successor;
+            return this.deleteNode(successor);
         }
 
         this.record();