diff --git a/settings/models.py b/settings/models.py
index b0dc471..6173ce7 100644
--- a/settings/models.py
+++ b/settings/models.py
@@ -15,11 +15,13 @@ class SiteSettings(models.Model):
     )
     site_logo = models.ImageField(
         verbose_name="Logo du site",
-        null=True
+        null=True,
+        blank=True
     )
     event_poster = models.ImageField(
         verbose_name="Affiche de l'événement",
-        null=True
+        null=True,
+        blank=True
     )
     min_number_of_categories = models.PositiveIntegerField(
         verbose_name="Nombre minimal de catégories dans laquelle participer",