diff --git a/discord_twitter_webhooks/_dataclasses.py b/discord_twitter_webhooks/_dataclasses.py
index 630690a..e7fd59b 100644
--- a/discord_twitter_webhooks/_dataclasses.py
+++ b/discord_twitter_webhooks/_dataclasses.py
@@ -79,24 +79,24 @@ def get_group(reader: Reader, uuid: str) -> Group:
     try:
         group = reader.get_tag((), uuid)
         return Group(
-            uuid=group["uuid"],
-            name=group["name"],
-            usernames=group["usernames"],
-            webhooks=group["webhooks"],
-            rss_feeds=group["rss_feeds"],
-            send_retweets=group["send_retweets"],
-            send_replies=group["send_replies"],
-            only_send_if_media=group["only_send_if_media"],
-            send_as_embed=group["send_as_embed"],
-            send_as_link=group["send_as_link"],
-            send_as_text=group["send_as_text"],
-            send_as_text_username=group["send_as_text_username"],
-            translate=group["translate"],
-            translate_to=group["translate_to"],
-            translate_from=group["translate_from"],
-            unescape_html=group["unescape_html"],
-            remove_copyright=group["remove_copyright"],
-            created_at=group["created_at"],
+            uuid=group.get("uuid", uuid),
+            name=group.get("name", Group.name),
+            usernames=group.get("usernames", []),
+            webhooks=group.get("webhooks", []),
+            rss_feeds=group.get("rss_feeds", []),
+            send_retweets=group.get("send_retweets", Group.send_retweets),
+            send_replies=group.get("send_replies", Group.send_replies),
+            only_send_if_media=group.get("only_send_if_media", Group.only_send_if_media),
+            send_as_embed=group.get("send_as_embed", Group.send_as_embed),
+            send_as_link=group.get("send_as_link", Group.send_as_link),
+            send_as_text=group.get("send_as_text", Group.send_as_text),
+            send_as_text_username=group.get("send_as_text_username", Group.send_as_text_username),
+            translate=group.get("translate", Group.translate),
+            translate_to=group.get("translate_to", Group.translate_to),
+            translate_from=group.get("translate_from", Group.translate_from),
+            unescape_html=group.get("unescape_html", Group.unescape_html),
+            remove_copyright=group.get("remove_copyright", Group.remove_copyright),
+            created_at=group.get("created_at", datetime.now(tz=timezone.utc).isoformat()),
         )
     except TagNotFoundError:
         logger.info("Group {} not found.", uuid)