diff --git a/index.html b/index.html
index 0086b81..2a069b5 100644
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+++ b/index.html
@@ -106,7 +106,7 @@ Addison-Wesley; 380pp; ISBN:&nbsp;978-0134190440<br/>
 <h1>11. Testing</h1>
 <h1>12. Reflection</h1>
 <h1>13. Low-Level Programming</h1>
-<h1>Index  [<a href='contents.pdf'/>PDF</a>]</h1>
+<h1>Index  [<a href='ch1.pdf'/>PDF</a>]</h1>
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