diff --git a/README.md b/README.md
index 0883fb752..4d6f181da 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ augmented)
 # Example
 <pre lang="java">
 /** Red-black tree augmented by the sum of the values in the subtree. */
-public class SumNode extends RedBlackNode<SumNode> {
+public class SumNode extends RedBlackNode&lt;SumNode&gt; {
     public int value;
     public int sum;