diff --git a/webseite/subjectEditor.php b/webseite/subjectEditor.php
index 4444838..2c89f47 100644
--- a/webseite/subjectEditor.php
+++ b/webseite/subjectEditor.php
@@ -3,6 +3,13 @@ require_once("classes/User.php");
 require_once("classes/SubjectData.php");
 require_once("classes/TopicData.php");
 
+session_start();
+
+if (!isset($_SESSION['user']) || !$_SESSION['user']->isLoggedIn()) {
+    header("Location: index.php");
+    die();
+}
+
 $allSubjects = SubjectData::getAll();
 $editingSubject = null;
 
diff --git a/webseite/topicEditor.php b/webseite/topicEditor.php
index 4805dcd..fa5dff5 100644
--- a/webseite/topicEditor.php
+++ b/webseite/topicEditor.php
@@ -1,10 +1,16 @@
 <?php
-// Temporarily remove validation
-// session_start();
+
 require_once("classes/User.php");
 require_once("classes/SubjectData.php");
 require_once("classes/TopicData.php");
 
+session_start();
+
+if (!isset($_SESSION['user']) || !$_SESSION['user']->isLoggedIn()) {
+    header("Location: index.php");
+    die();
+}
+
 $allSubjects = SubjectData::getAll();
 $editingTopic = null;