diff --git a/data/api/client-server/definitions/public_rooms_chunk.yaml b/data/api/client-server/definitions/public_rooms_chunk.yaml
index 02334d14..64786432 100644
--- a/data/api/client-server/definitions/public_rooms_chunk.yaml
+++ b/data/api/client-server/definitions/public_rooms_chunk.yaml
@@ -34,7 +34,7 @@ properties:
   topic:
     type: string
     description: |-
-      The plaintext topic of the room. Omitted if no `text/plain` mimetype
+      The plain text topic of the room. Omitted if no `text/plain` mimetype
       exists in [`m.room.topic`](/client-server-api/#mroomtopic).
     example: "All things general"
   world_readable: