# Require topics in stream messages

Administrators can configure whether stream messages must have a
specified topic.

## Require topics in stream messages

{!admin-only.md!}

{start_tabs}

{settings_tab|organization-settings}

1. Under **Other settings**, toggle
   **Require topics in streams messages**.

{!save-changes.md!}

{end_tabs}

## Stream messages without a topic

If a user sends a message without a topic, the message's topic is
displayed as **(no topic)**.

When [message editing](/help/configure-message-editing-and-deletion)
is enabled, any user can [add a topic](/help/rename-a-topic)
to messages without a topic. They can do so regardless of whether
they can [edit topics in general](/help/configure-who-can-edit-topics).
