diff --git a/app/models/invite.rb b/app/models/invite.rb
index 54b8131a763..fdeb76e0dfc 100644
--- a/app/models/invite.rb
+++ b/app/models/invite.rb
@@ -172,7 +172,7 @@ class Invite < ActiveRecord::Base
     invite = Invite.find_by(invite_key: token)
     if invite
       invite.update_column(:email, email)
-      invite.topic_invites.create!(invite_id: invite.id, topic_id: topic_id) if topic_id && Topic.find_by_id(topic_id)
+      invite.topic_invites.create!(invite_id: invite.id, topic_id: topic_id) if topic_id && Topic.find_by_id(topic_id) && !invite.topic_invites.pluck(:topic_id).include?(topic_id)
       user = InviteRedeemer.new(invite, username, name).redeem
     end
     user