X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/6d42bc478e3d1bd90eb294464748c21e4de0fc63..388e067266479b2c201d94ffad6e199f17e3ff17:/src/contact/admin.py

diff --git a/src/contact/admin.py b/src/contact/admin.py
index cf8d06cd0..98413f34c 100644
--- a/src/contact/admin.py
+++ b/src/contact/admin.py
@@ -56,7 +56,7 @@ class ContactAdmin(admin.ModelAdmin, metaclass=ContactAdminMeta):
             else:
                 # Create readonly fields from the body JSON.
                 attachments = list(instance.attachment_set.all())
-                body_keys = body.keys() + [a.tag for a in attachments]
+                body_keys = list(body.keys()) + [a.tag for a in attachments]
 
                 # Find the original form.
                 try: