diff --git a/system/src/Grav/Common/Page/Page.php b/system/src/Grav/Common/Page/Page.php
index 8983cfd5d..58304b14d 100644
--- a/system/src/Grav/Common/Page/Page.php
+++ b/system/src/Grav/Common/Page/Page.php
@@ -771,7 +771,7 @@ class Page
 
         $blueprint = $pages->blueprints($this->blueprintName());
         $fields = $blueprint->fields();
-        $edit_mode = self::getGrav()['admin'] ? self::getGrav()['config']->get('plugins.admin.edit_mode') : null;
+        $edit_mode = isset(self::getGrav()['admin']) ? self::getGrav()['config']->get('plugins.admin.edit_mode') : null;
 
         // override if you only want 'normal' mode
         if (empty($fields) && ($edit_mode == 'auto' || $edit_mode == 'normal')) {