diff --git a/src/auth.php b/src/auth.php
index fc7a6dd..45148ae 100644
--- a/src/auth.php
+++ b/src/auth.php
@@ -10,6 +10,11 @@ function login()
     }
 }
 
+if (isset($_POST['logout']))
+{
+    session_destroy();
+}
+
 session_start();
 
 if (isset($_POST['user']) && isset($_POST['password']))
diff --git a/src/index.php b/src/index.php
index 4c1a2af..892b140 100644
--- a/src/index.php
+++ b/src/index.php
@@ -44,6 +44,7 @@ else if ($selected_dir)
 
 <footer>
     <form method="POST" action="/auth.php">
+        <input type="hidden" id="logout" name="logout" value="true" />
         <input type="submit" value="Log out" />
     </form>
 </footer>