diff --git a/src/usecase/purchase/build_placement_creative.py b/src/usecase/purchase/build_placement_creative.py
index 2b048ac..a8f5aa1 100644
--- a/src/usecase/purchase/build_placement_creative.py
+++ b/src/usecase/purchase/build_placement_creative.py
@@ -157,7 +157,7 @@ async def build_placement_creative(
         # Generate invite_link_name if not set
         if not placement.invite_link_name:
             short_id = uuid_to_short_id(placement.id)
-            placement.invite_link_name = generate_invite_link_name(short_id, project.channel.title)
+            placement.invite_link_name = generate_invite_link_name(short_id, placement.channel.title)
 
         requires_approval = placement.invite_link_type == domain.InviteLinkType.APPROVAL
         invite_link = await self.telegram_bot.create_chat_invite_link(