diff --git a/courses.php b/courses.php
index 99b76cd..82fccf7 100644
--- a/courses.php
+++ b/courses.php
@@ -24,13 +24,22 @@ include "includes/navbar.html";
 <section class="teaching">
 <article>
   <header>
-    <h1>Gasal 2020/2021</h1>
+    <h1>Genap 2020/2021</h1>
   </header>
   <ol>
     <li><a href="kakom-ti/index.php">Computer Security</a></li>
     <li><a href="adminsis-ti/index.php">System Administration</a></li>
-    <li><a href="os-ti/index.php">Operating System</a></li>
-    <li><a href="dbadmin-ti/index.php">Database Administration</a></li>
+  </ol>
+</article>
+<article>
+  <header>
+    <h1>Gasal 2020/2021</h1>
+  </header>
+  <ol>
+    <li>Computer Security</li>
+    <li>System Administration</li>
+    <li>Operating System</li>
+    <li>Database Administration</li>
   </ol>
 </article>
 <article>
diff --git a/includes/courses.php b/includes/courses.php
index aebfc7b..5186735 100644
--- a/includes/courses.php
+++ b/includes/courses.php
@@ -5,8 +5,6 @@
     <li><a href="../kakom-ti/">CompSec</a></li>
     <li>|</li>
     <li><a href="../adminsis-ti/">SysAdmin</a></li>
-    <li>|</li>
-    <li><a href="../os-ti/">OS</a></li>
   </ul>
 </nav>
 
diff --git a/index.php b/index.php
index e0c6b0d..e2573f6 100644
--- a/index.php
+++ b/index.php
@@ -50,9 +50,9 @@ include "includes/quotes.php";
   <article>
     <header>
       <h3>My classes next semester</h3>
-      <span><time datetime="2020-09-14">Sept, 14 2020</time></span>
+      <span><time datetime="2021-01-18">Jan, 18 2021</time></span>
     </header>
-    <p>I will be teaching  Operating System, System Administration, Business Communication, Database Administration,  IT Security.</p>
+    <p>I will be teaching  System Administration and IT Security.</p>
   </article>
 </section>
 <?php