diff --git a/src/bundle/Core/EventListener/SessionInitByPostListener.php b/src/bundle/Core/EventListener/SessionInitByPostListener.php
index 1c2df959af..f4f9e92a08 100644
--- a/src/bundle/Core/EventListener/SessionInitByPostListener.php
+++ b/src/bundle/Core/EventListener/SessionInitByPostListener.php
@@ -27,9 +27,12 @@ public static function getSubscribedEvents()
     public function onSiteAccessMatch(PostSiteAccessMatchEvent $event)
     {
         $request = $event->getRequest();
-        $session = $request->getSession();
+        $session = null;
+        if ($request->hasSession()) {
+            $session = $request->getSession();
+        }
 
-        if (!$session || $event->getRequestType() !== HttpKernelInterface::MAIN_REQUEST) {
+        if (null === $session || $event->getRequestType() !== HttpKernelInterface::MAIN_REQUEST) {
             return;
         }
 
diff --git a/tests/bundle/Core/EventListener/SessionInitByPostListenerTest.php b/tests/bundle/Core/EventListener/SessionInitByPostListenerTest.php
index cffa62b597..764624af71 100644
--- a/tests/bundle/Core/EventListener/SessionInitByPostListenerTest.php
+++ b/tests/bundle/Core/EventListener/SessionInitByPostListenerTest.php
@@ -117,6 +117,14 @@ public function testOnSiteAccessMatchNewSessionName()
 
         $this->listener->onSiteAccessMatch($event);
     }
+
+    public function testOnSiteAccessMatchNoSession(): void
+    {
+        $request = new Request();
+
+        $event = new PostSiteAccessMatchEvent(new SiteAccess('test'), $request, HttpKernelInterface::MAIN_REQUEST);
+        $this->listener->onSiteAccessMatch($event);
+    }
 }
 
 class_alias(SessionInitByPostListenerTest::class, 'eZ\Bundle\EzPublishCoreBundle\Tests\EventListener\SessionInitByPostListenerTest');