diff --git a/includes/header.php b/includes/header.php
index 08ca175..1e59cf8 100644
--- a/includes/header.php
+++ b/includes/header.php
@@ -12,5 +12,10 @@
             echo 'class="active"';
         } ?>
             href="about.php">About</a>
+        <a <?php
+        if ('User Guide' == $CURRENT_PAGE) {
+            echo 'class="active"';
+        } ?>
+            href="userguide.php">User Guide</a>
         <div>
 </header>