diff --git a/cmd/dendrite-demo-yggdrasil/main.go b/cmd/dendrite-demo-yggdrasil/main.go
index c9e0c58d8..b2d40f4f7 100644
--- a/cmd/dendrite-demo-yggdrasil/main.go
+++ b/cmd/dendrite-demo-yggdrasil/main.go
@@ -59,6 +59,9 @@ func main() {
 		panic(err)
 	}
 	ygg.SetMulticastEnabled(true)
+	if instancePeer != nil && *instancePeer != "" {
+		ygg.SetStaticPeer(*instancePeer)
+	}
 
 	cfg := &config.Dendrite{}
 	cfg.SetDefaults()