diff --git a/database/factories/SocieteFactory.php b/database/factories/SocieteFactory.php
index 48ccfea..63ce23e 100644
--- a/database/factories/SocieteFactory.php
+++ b/database/factories/SocieteFactory.php
@@ -42,7 +42,7 @@ class SocieteFactory extends Factory
             'phone' => $this->faker->unique()->phoneNumber(),
             'address' => $this->faker->unique()->address(),
             'logo' => Societe::saveLogo($logo, $companyName),
-            'colors' => $colors->all()
+            'colors' => \json_encode($colors->all())
         ];
     }
 }