diff --git a/misskaty/plugins/sangmata.py b/misskaty/plugins/sangmata.py
index aba7fb4d..9932c274 100644
--- a/misskaty/plugins/sangmata.py
+++ b/misskaty/plugins/sangmata.py
@@ -38,7 +38,7 @@ async def cek_mataa(_, m):
         msg += f"From {first_name} ➡️ {m.from_user.first_name}.\n"
         await add_userdata(m.from_user.id, m.from_user.username, m.from_user.first_name, m.from_user.last_name)
     if last_name != m.from_user.last_name:
-        username = "No Lastname" if not username else username
+        last_name = "No Lastname" if not username else username
         msg += f"{m.from_user.mention} [<code>{m.from_user.id}</code>] changed last_name.\n"
         msg += f"From {last_name} ➡️ {m.from_user.last_name}."
         await add_userdata(m.from_user.id, m.from_user.username, m.from_user.first_name, m.from_user.last_name)