diff --git a/backend/dev_homeserver.yaml b/backend/dev_homeserver.yaml
index 965940b6..b41de45b 100644
--- a/backend/dev_homeserver.yaml
+++ b/backend/dev_homeserver.yaml
@@ -1,4 +1,6 @@
 server_name: "synapse.localhost"
+public_baseurl: http://synapse.localhost:8008/
+
 pid_file: /data/homeserver.pid
 
 listeners: