diff --git a/src/Guard.php b/src/Guard.php
new file mode 100644
index 0000000..c388e72
--- /dev/null
+++ b/src/Guard.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: mostafamaklad
+ * Date: 12/03/2018
+ * Time: 2:23 PM
+ */
+
+namespace Maklad\Permission;
+
+use Illuminate\Support\Collection;
+
+/**
+ * Class Guard
+ * @package Maklad\Permission
+ */
+class Guard
+{
+    /**
+     * return collection of (guard_name) property if exist on class or object
+     * otherwise will return collection of guards names that exists in config/auth.php.
+     *
+     * @param $model
+     *
+     * @return Collection
+     * @throws \ReflectionException
+     */
+    public static function getNames($model) : Collection
+    {
+        if (\is_object($model)) {
+            $guardName = $model->guard_name ?? null;
+        }
+
+        if (! isset($guardName)) {
+            $class = \is_object($model) ? \get_class($model) : $model;
+            $guardName = (new \ReflectionClass($class))->getDefaultProperties()['guard_name'] ?? null;
+        }
+
+        if ($guardName) {
+            return collect($guardName);
+        }
+        return collect(config('auth.guards'))
+            ->map(function ($guard) {
+                return config("auth.providers.{$guard['provider']}.model");
+            })
+            ->filter(function ($model) use ($class) {
+                return $class === $model;
+            })
+            ->keys();
+    }
+
+    /**
+     * Return Default Guard name
+     *
+     * @param $class
+     *
+     * @return string
+     * @throws \ReflectionException
+     */
+    public static function getDefaultName($class): string
+    {
+        $default = config('auth.defaults.guard');
+        return static::getNames($class)->first() ?: $default;
+    }
+}
diff --git a/src/Models/Permission.php b/src/Models/Permission.php
index 061ecb8..2d1dfa2 100644
--- a/src/Models/Permission.php
+++ b/src/Models/Permission.php
@@ -9,6 +9,7 @@
 use Maklad\Permission\Contracts\PermissionInterface;
 use Maklad\Permission\Exceptions\PermissionAlreadyExists;
 use Maklad\Permission\Exceptions\PermissionDoesNotExist;
+use Maklad\Permission\Guard;
 use Maklad\Permission\Helpers;
 use Maklad\Permission\PermissionRegistrar;
 use Maklad\Permission\Traits\RefreshesPermissionCache;
@@ -28,10 +29,12 @@ class Permission extends Model implements PermissionInterface
      * Permission constructor.
      *
      * @param array $attributes
+     *
+     * @throws \ReflectionException
      */
     public function __construct(array $attributes = [])
     {
-        $attributes['guard_name'] = $attributes['guard_name'] ?? \config('auth.defaults.guard');
+        $attributes['guard_name'] = $attributes['guard_name'] ?? Guard::getDefaultName(static::class);
 
         parent::__construct($attributes);
 
@@ -47,11 +50,12 @@ public function __construct(array $attributes = [])
      *
      * @return $this|\Illuminate\Database\Eloquent\Model
      * @throws \Maklad\Permission\Exceptions\PermissionAlreadyExists
+     * @throws \ReflectionException
      */
     public static function create(array $attributes = [])
     {
         $helpers                  = new Helpers();
-        $attributes['guard_name'] = $attributes['guard_name'] ?? \config('auth.defaults.guard');
+        $attributes['guard_name'] = $attributes['guard_name'] ?? Guard::getDefaultName(static::class);
 
         if (static::getPermissions()->where('name', $attributes['name'])->where(
             'guard_name',
@@ -77,10 +81,11 @@ public static function create(array $attributes = [])
      *
      * @return PermissionInterface
      * @throws \Maklad\Permission\Exceptions\PermissionAlreadyExists
+     * @throws \ReflectionException
      */
     public static function findOrCreate(string $name, $guardName = null): PermissionInterface
     {
-        $guardName = $guardName ?? config('auth.defaults.guard');
+        $guardName = $guardName ?? Guard::getDefaultName(static::class);
 
         $permission = static::getPermissions()
                             ->where('name', $name)
@@ -123,10 +128,11 @@ public function users(): BelongsToMany
      *
      * @return PermissionInterface
      * @throws PermissionDoesNotExist
+     * @throws \ReflectionException
      */
     public static function findByName(string $name, $guardName = null): PermissionInterface
     {
-        $guardName = $guardName ?? \config('auth.defaults.guard');
+        $guardName = $guardName ?? Guard::getDefaultName(static::class);
 
         $permission = static::getPermissions()->where('name', $name)->where('guard_name', $guardName)->first();
 
diff --git a/src/Models/Role.php b/src/Models/Role.php
index d256c24..1724d7a 100644
--- a/src/Models/Role.php
+++ b/src/Models/Role.php
@@ -8,6 +8,7 @@
 use Maklad\Permission\Exceptions\GuardDoesNotMatch;
 use Maklad\Permission\Exceptions\RoleAlreadyExists;
 use Maklad\Permission\Exceptions\RoleDoesNotExist;
+use Maklad\Permission\Guard;
 use Maklad\Permission\Helpers;
 use Maklad\Permission\Traits\HasPermissions;
 use Maklad\Permission\Traits\RefreshesPermissionCache;
@@ -28,10 +29,12 @@ class Role extends Model implements RoleInterface
      * Role constructor.
      *
      * @param array $attributes
+     *
+     * @throws \ReflectionException
      */
     public function __construct(array $attributes = [])
     {
-        $attributes['guard_name'] = $attributes['guard_name'] ?? config('auth.defaults.guard');
+        $attributes['guard_name'] = $attributes['guard_name'] ?? Guard::getDefaultName(static::class);
 
         parent::__construct($attributes);
 
@@ -47,10 +50,11 @@ public function __construct(array $attributes = [])
      * @throws RoleAlreadyExists
      * @internal param array $attributes§
      *
+     * @throws \ReflectionException
      */
     public static function create(array $attributes = [])
     {
-        $attributes['guard_name'] = $attributes['guard_name'] ?? \config('auth.defaults.guard');
+        $attributes['guard_name'] = $attributes['guard_name'] ?? Guard::getDefaultName(static::class);
         $helpers                  = new Helpers();
 
         if (static::where('name', $attributes['name'])->where('guard_name', $attributes['guard_name'])->first()) {
@@ -74,10 +78,11 @@ public static function create(array $attributes = [])
      *
      * @return RoleInterface
      * @throws \Maklad\Permission\Exceptions\RoleAlreadyExists
+     * @throws \ReflectionException
      */
     public static function findOrCreate(string $name, $guardName = null): RoleInterface
     {
-        $guardName = $guardName ?? config('auth.defaults.guard');
+        $guardName = $guardName ?? Guard::getDefaultName(static::class);
 
         $role = static::where('name', $name)
                       ->where('guard_name', $guardName)
@@ -98,10 +103,11 @@ public static function findOrCreate(string $name, $guardName = null): RoleInterf
      *
      * @return RoleInterface
      * @throws RoleDoesNotExist
+     * @throws \ReflectionException
      */
     public static function findByName(string $name, $guardName = null): RoleInterface
     {
-        $guardName = $guardName ?? config('auth.defaults.guard');
+        $guardName = $guardName ?? Guard::getDefaultName(static::class);
 
         $role = static::where('name', $name)
                       ->where('guard_name', $guardName)
diff --git a/src/Traits/HasPermissions.php b/src/Traits/HasPermissions.php
index 39a500d..8895e97 100644
--- a/src/Traits/HasPermissions.php
+++ b/src/Traits/HasPermissions.php
@@ -8,6 +8,7 @@
 use Jenssegers\Mongodb\Relations\BelongsToMany;
 use Maklad\Permission\Contracts\PermissionInterface as Permission;
 use Maklad\Permission\Exceptions\GuardDoesNotMatch;
+use Maklad\Permission\Guard;
 use Maklad\Permission\Helpers;
 use Maklad\Permission\PermissionRegistrar;
 
@@ -107,6 +108,7 @@ public function revokePermissionTo(...$permissions)
      * @param string|Permission $permission
      *
      * @return Permission
+     * @throws \ReflectionException
      */
     protected function getStoredPermission($permission): Permission
     {
@@ -121,6 +123,7 @@ protected function getStoredPermission($permission): Permission
      * @param Model $roleOrPermission
      *
      * @throws GuardDoesNotMatch
+     * @throws \ReflectionException
      */
     protected function ensureModelSharesGuard(Model $roleOrPermission)
     {
@@ -133,27 +136,22 @@ protected function ensureModelSharesGuard(Model $roleOrPermission)
         }
     }
 
+    /**
+     * @return Collection
+     * @throws \ReflectionException
+     */
     protected function getGuardNames(): Collection
     {
-        if ($this->guard_name) {
-            return collect($this->guard_name);
-        }
-
-        return collect(config('auth.guards'))
-            ->map(function ($guard) {
-                return config("auth.providers.{$guard['provider']}.model");
-            })
-            ->filter(function ($model) {
-                return \get_class($this) === $model;
-            })
-            ->keys();
+        return Guard::getNames($this);
     }
 
+    /**
+     * @return string
+     * @throws \ReflectionException
+     */
     protected function getDefaultGuardName(): string
     {
-        $default = config('auth.defaults.guard');
-
-        return $this->getGuardNames()->first() ?: $default;
+        return Guard::getDefaultName($this);
     }
 
     /**