diff --git a/lib/Controller/PageController.php b/lib/Controller/PageController.php
index 365d4296..04520842 100644
--- a/lib/Controller/PageController.php
+++ b/lib/Controller/PageController.php
@@ -94,6 +94,7 @@ class PageController extends Controller
 
         $response = new TemplateResponse($this->appName, 'main');
         $response->setContentSecurityPolicy(self::getCSP());
+        $response->cacheFor(0);
 
         return $response;
     }
diff --git a/lib/Controller/PublicController.php b/lib/Controller/PublicController.php
index d39382f1..0ca79aad 100644
--- a/lib/Controller/PublicController.php
+++ b/lib/Controller/PublicController.php
@@ -110,6 +110,7 @@ class PublicController extends AuthPublicShareController
         $response->setHeaderTitle($share->getNode()->getName());
         $response->setFooterVisible(false); // wth is that anyway?
         $response->setContentSecurityPolicy(PageController::getCSP());
+        $response->cacheFor(0);
 
         return $response;
     }