diff --git a/app/Models/User.php b/app/Models/User.php
index 1d1728d..590f8de 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -77,7 +77,7 @@ class User extends Authenticatable
      */
     public function getAvatarAttribute($value)
     {
-        if (!$value) {
+        if (!$value || strtolower($value) === 'null') {
             return asset('images/avatar.png');
         }