diff --git a/cmd/webui4frpc/main.go b/cmd/webui4frpc/main.go
index 6745449..b66804a 100644
--- a/cmd/webui4frpc/main.go
+++ b/cmd/webui4frpc/main.go
@@ -402,6 +402,9 @@ func main() {
 		Sessions: httpapi.NewSessionStore(),
 		Cluster:  reg,
 		Ring:     ring,
+		// Balancer is created above, before the environment that configures it is
+		// parsed, because the HTTP layer needs the pointer.
+		Balancer: balancer,
 		// SelfAddr must be reachable by peers. 0.0.0.0/empty on a real host
 		// would break peer reconnect, so fall back to the hostname (container
 		// name inside docker is a routable addr on the compose network).