1 files changed, 2 insertions, 0 deletions
diff --git a/lib/gitlab/background_migration/user_mentions/models/group.rb b/lib/gitlab/background_migration/user_mentions/models/group.rb
index bc04172b9a2..a8b4b59b06c 100644
--- a/lib/gitlab/background_migration/user_mentions/models/group.rb
+++ b/lib/gitlab/background_migration/user_mentions/models/group.rb
@@ -7,6 +7,8 @@ module Gitlab
         # isolated Group model
         class Group < ::Gitlab::BackgroundMigration::UserMentions::Models::Namespace
           self.store_full_sti_class = false
+          self.inheritance_column = :_type_disabled
+
           has_one :saml_provider
 
           def self.declarative_policy_class