diff --git a/index.html b/index.html
index 3a883ba..3c7ed7c 100644
--- a/index.html
+++ b/index.html
@@ -284,7 +284,7 @@ m.
         </section>
         <section>
 
-    <h3>Ancestal roots, a Visualization:</h3>
+    <h3>Ancestral roots, a Visualization:</h3>
     <p></p>
     <img src="https://context.kennethreitz.org/reports/georg-tree.png">