diff --git a/roles/matrix/templates/matrix-synapse/homeserver.yaml.j2 b/roles/matrix/templates/matrix-synapse/homeserver.yaml.j2
index 7a8fa4a..09d9e6d 100644
--- a/roles/matrix/templates/matrix-synapse/homeserver.yaml.j2
+++ b/roles/matrix/templates/matrix-synapse/homeserver.yaml.j2
@@ -113,7 +113,7 @@ presence:
 # If set to 'true', allows any other homeserver to fetch the server's public
 # rooms directory via federation. Defaults to 'false'.
 #
-#allow_public_rooms_over_federation: true
+allow_public_rooms_over_federation: true
 
 # The default room version for newly created rooms.
 #