diff --git a/library/Icinga/Web/Controller/ActionController.php b/library/Icinga/Web/Controller/ActionController.php
index 0703e4e98..655a85aca 100644
--- a/library/Icinga/Web/Controller/ActionController.php
+++ b/library/Icinga/Web/Controller/ActionController.php
@@ -179,7 +179,7 @@ class ActionController extends Zend_Controller_Action
      */
     public function assertPermission($permission)
     {
-        if ($this->requiresAuthentication && ! $this->Auth()->hasPermission($permission)) {
+        if (! $this->Auth()->hasPermission($permission)) {
             throw new SecurityException('No permission for %s', $permission);
         }
     }
diff --git a/library/Icinga/Web/Controller/ModuleActionController.php b/library/Icinga/Web/Controller/ModuleActionController.php
index 1ae32e10c..38826a84c 100644
--- a/library/Icinga/Web/Controller/ModuleActionController.php
+++ b/library/Icinga/Web/Controller/ModuleActionController.php
@@ -26,7 +26,8 @@ class ModuleActionController extends ActionController
     protected function prepareInit()
     {
         $this->moduleInit();
-        if ($this->getFrontController()->getDefaultModule() !== $this->getModuleName()) {
+        if ($this->requiresLogin()
+            && $this->getFrontController()->getDefaultModule() !== $this->getModuleName()) {
             $this->assertPermission(Manager::MODULE_PERMISSION_NS . $this->getModuleName());
         }
     }