diff --git a/apps/establishment/management/commands/establishment_optimize_preview_image.py b/apps/establishment/management/commands/establishment_optimize_preview_image.py
index 50a73a26..f50c8801 100644
--- a/apps/establishment/management/commands/establishment_optimize_preview_image.py
+++ b/apps/establishment/management/commands/establishment_optimize_preview_image.py
@@ -24,5 +24,5 @@ class Command(BaseCommand):
                     establishment.preview_image_url = get_thumbnail(
                         file_=establishment.preview_image_url,
                         **sorl_settings
-                    )
+                    ).url
                     establishment.save()