diff --git a/proposals/3173-expose-stripped-state-events.md b/proposals/3173-expose-stripped-state-events.md
index 4d7ed78b..b80f6256 100644
--- a/proposals/3173-expose-stripped-state-events.md
+++ b/proposals/3173-expose-stripped-state-events.md
@@ -80,12 +80,13 @@ should consider this MSC, for example:
Additionally, it is recommended, but not required, that homeserver implementations
include the following as stripped state events:
-* Create event (`m.room.create`)[2](#f1)
+* Create event (`m.room.create`)[1](#f1)
* Join rules (`m.room.join_rules`)
* Canonical alias (`m.room.canonical_alias`)
* Room avatar (`m.room.avatar`)
* Room name (`m.room.name`)
-* Encryption information (`m.room.encryption`)[3](#f2)
+* Encryption information (`m.room.encryption`)[2](#f2)
+* Room topic (`m.room.topic`)[3](#f3)
This also implies that the above information is available to any potential joiner
in the API proposed in [MSC2946: Spaces summary](https://github.com/matrix-org/matrix-doc/pull/2946).
@@ -121,7 +122,13 @@ N/A
## Footnotes
-[1]: As updated in [MSC1772](https://github.com/matrix-org/matrix-doc/pull/1772).[↩](#a1)
+[1]: As updated in [MSC1772](https://github.com/matrix-org/matrix-doc/pull/1772). [↩](#a1)
-[2]: This is already sent from Synapse and generally seems useful for
-a user to know before joining a room.[↩](#a2)
+[2]: The encryption information (`m.room.encryption`) is already sent
+from Synapse and generally seems useful for a user to know before joining a room.
+[↩](#a2)
+
+[3]: The room topic (`m.room.topic`) is included as part of the
+[room directory](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-publicrooms)
+response for public rooms. It is additional to be included as part of [MSC2946](https://github.com/matrix-org/matrix-doc/pull/2946)
+in the spaces summary response. [↩](#a3)