diff --git a/src/helpers.php b/src/helpers.php
index 0171f5f..f5e262d 100644
--- a/src/helpers.php
+++ b/src/helpers.php
@@ -6,7 +6,7 @@
      *
      * @param  string|null  $locale
      */
-    function faker(string $locale = '') : \Xefi\Faker\Faker
+    function faker(null|string $locale = '') : \Xefi\Faker\Faker
     {
         if ($locale === '') {
             $locale = app()->bound('config') ?
diff --git a/tests/Unit/HelperTest.php b/tests/Unit/HelperTest.php
index e142018..e80c426 100644
--- a/tests/Unit/HelperTest.php
+++ b/tests/Unit/HelperTest.php
@@ -11,4 +11,10 @@ public function testFakerHelper() {
         
         $this->assertInstanceOf(Faker::class, $faker);
     }
+
+    public function testFakerHelperWithNullLocale() {
+        $faker = faker(null);
+
+        $this->assertEquals(null, $faker->getLocale());
+    }
 }
\ No newline at end of file