diff --git a/balancer.go b/balancer.go
index 3620499539c1..e561dbaf78c5 100644
--- a/balancer.go
+++ b/balancer.go
@@ -165,7 +165,8 @@ func (rr *roundRobin) watchAddrUpdates() error {
 	defer rr.mu.Unlock()
 	for _, update := range updates {
 		addr := Address{
-			Addr: update.Addr,
+			Addr:     update.Addr,
+			Metadata: update.Metadata,
 		}
 		switch update.Op {
 		case naming.Add: