diff --git a/library/Icinga/Security/Csp/Loader/DashboardCspLoader.php b/library/Icinga/Security/Csp/Loader/DashboardCspLoader.php
index ffabb5374..3d2461ed1 100644
--- a/library/Icinga/Security/Csp/Loader/DashboardCspLoader.php
+++ b/library/Icinga/Security/Csp/Loader/DashboardCspLoader.php
@@ -90,11 +90,14 @@ class DashboardCspLoader implements CspLoader
 
         if ($this->allUsers) {
             $result = [];
-            foreach (new DirectoryIterator(Config::resolvePath('dashboards')) as $dir) {
+            $dashboardsDir = Config::resolvePath('dashboards');
+            if (! is_dir($dashboardsDir)) {
+                return $result;
+            }
+            foreach (new DirectoryIterator($dashboardsDir) as $dir) {
                 if ($dir->isDot() || ! $dir->isDir()) {
                     continue;
                 }
-
                 $user = new User($dir->getFilename());
                 $result = array_merge($result, $this->loadForUser($user));
             }
diff --git a/library/Icinga/Security/Csp/Loader/NavigationCspLoader.php b/library/Icinga/Security/Csp/Loader/NavigationCspLoader.php
index 208e270d0..a82c9e2cf 100644
--- a/library/Icinga/Security/Csp/Loader/NavigationCspLoader.php
+++ b/library/Icinga/Security/Csp/Loader/NavigationCspLoader.php
@@ -117,12 +117,14 @@ class NavigationCspLoader implements CspLoader
         if ($this->allUsers) {
             foreach ($navigationTypes as $type => $typeConfig) {
                 $result = array_merge($result, $this->loadConfig($type, $typeConfig));
-
-                foreach (new DirectoryIterator(Config::resolvePath('preferences')) as $userDir) {
+                $preferencesDir = Config::resolvePath('preferences');
+                if (! is_dir($preferencesDir)) {
+                    continue;
+                }
+                foreach (new DirectoryIterator($preferencesDir) as $userDir) {
                     if ($userDir->isDot() || ! $userDir->isDir()) {
                         continue;
                     }
-
                     $result = array_merge($result, $this->loadConfig($type, $typeConfig, $userDir->getFilename()));
                 }
             }