diff --git a/dendrite-sample.yaml b/dendrite-sample.yaml
index 6b3ea74f2..8895bf8ee 100644
--- a/dendrite-sample.yaml
+++ b/dendrite-sample.yaml
@@ -273,6 +273,9 @@ media_api:
       height: 480
       method: scale
 
+# Configuration for the Relay API.
+relay_api:
+
 # Configuration for enabling experimental MSCs on this homeserver.
 mscs:
   mscs: