diff --git a/src/data-structures/tree/binary-search-tree/BinarySearchTree.js b/src/data-structures/tree/binary-search-tree/BinarySearchTree.js
index 385b471f..e70950f9 100644
--- a/src/data-structures/tree/binary-search-tree/BinarySearchTree.js
+++ b/src/data-structures/tree/binary-search-tree/BinarySearchTree.js
@@ -6,6 +6,9 @@ export default class BinarySearchTree {
    */
   constructor(nodeValueCompareFunction) {
     this.root = new BinarySearchTreeNode(null, nodeValueCompareFunction);
+
+    // Steal node comparator from the root.
+    this.nodeComparator = this.root.nodeComparator;
   }
 
   /**