diff --git a/app/Admin.php b/app/Admin.php
index 56f2cae..22804f3 100644
--- a/app/Admin.php
+++ b/app/Admin.php
@@ -55,7 +55,7 @@ class Admin extends Authenticatable implements Auditable
     use SoftDeletes;
     use \OwenIt\Auditing\Auditable;
 
-    CONST GUARD_NAME = "admin";
+    const GUARD_NAME = "admin";
 
     public function guardName()
     {
@@ -67,9 +67,7 @@ class Admin extends Authenticatable implements Auditable
      *
      * @var array
      */
-    protected $fillable = [
-        'name', 'username', 'password','project_ids','remember_token'
-    ];
+    protected $guarded = ['id'];
 
     /**
      * The attributes that should be hidden for arrays.