diff --git a/admin.php b/admin.php
index f973457b..50615262 100644
--- a/admin.php
+++ b/admin.php
@@ -792,11 +792,13 @@ class AdminPlugin extends Plugin
     {
         // Special case to redirect after changing the admin route to avoid 'breaking'
         $obj = $event['object'];
-        $blueprint = $obj->blueprints()->getFilename();
+        if (!is_null($event['object'])) {
+            $blueprint = $obj->blueprints()->getFilename();
 
-        if ($blueprint == 'admin/blueprints' && isset($obj->route) && $this->admin_route !== $obj->route) {
-            $redirect = preg_replace('/^' . str_replace('/','\/',$this->admin_route) . '/',$obj->route,$this->uri->path());
-            $this->grav->redirect($redirect);
+            if ($blueprint == 'admin/blueprints' && isset($obj->route) && $this->admin_route !== $obj->route) {
+                $redirect = preg_replace('/^' . str_replace('/','\/',$this->admin_route) . '/',$obj->route,$this->uri->path());
+                $this->grav->redirect($redirect);
+            }
         }
     }