diff --git a/kripto-ti/index.php b/kripto-ti/index.php
index 49cdbf5..49f9094 100644
--- a/kripto-ti/index.php
+++ b/kripto-ti/index.php
@@ -68,7 +68,7 @@ include "../includes/courses.php";
     <h1>REFERENSI</h1>
   </header>
 <ol>
-  <li>Introduction to Modern Cryptography (Jonathan Katz, Yehuda Lindell, Chapman &amp;Hall)</li>
+  <li>Introduction to Modern Cryptography (Jonathan Katz, Yehuda Lindell, Chapman &amp; Hall)</li>
 </section>
 <?php
 include "../includes/footer.php";