diff --git a/examples/graph/23_hierarchical_layout.html b/examples/graph/23_hierarchical_layout.html
index 5923e21e..2545dbbc 100644
--- a/examples/graph/23_hierarchical_layout.html
+++ b/examples/graph/23_hierarchical_layout.html
@@ -96,7 +96,7 @@
 <h2>Hierarchical Layout - Scale-Free-Graph</h2>
 <div style="width:700px; font-size:14px;">
     This example shows the randomly generated <b>scale-free-graph</b> set of nodes and connected edges from example 2.
-    In this example, hierarchical layout has been enabled and the vertical levels are determine automatically.
+    In this example, hierarchical layout has been enabled and the vertical levels are determined automatically.
 </div>
 <br />
 <form onsubmit="draw(); return false;">
diff --git a/examples/graph/index.html b/examples/graph/index.html
index db69b9ca..86ec79b5 100644
--- a/examples/graph/index.html
+++ b/examples/graph/index.html
@@ -35,7 +35,7 @@
   <p><a href="21_data_manipulation.html">21_data_manipulation.html</a></p>
   <p><a href="22_les_miserables.html">22_les_miserables.html</a></p>
   <p><a href="23_hierarchical_layout.html">23_hierarchical_layout.html</a></p>
-  <p><a href="24_hierarchical_layout_userdefined.html">24_hierarchical_layout_predefined.html</a></p>
+  <p><a href="24_hierarchical_layout_userdefined.html">24_hierarchical_layout_userdefined.html</a></p>
   <p><a href="graphviz/graphviz_gallery.html">graphviz_gallery.html</a></p>
 
 </div>