diff --git a/proxy/proxy.go b/proxy/proxy.go
index bc2afe1fe..bb4883aa6 100755
--- a/proxy/proxy.go
+++ b/proxy/proxy.go
@@ -156,7 +156,7 @@ func New(opts *config.Options) (*Proxy, error) {
 	p.AuthenticateClient, err = clients.NewAuthenticateClient("grpc",
 		&clients.Options{
 			Addr:                    opts.AuthenticateURL.Host,
-			InternalAddr:            opts.AuthenticateInternalAddr.String(),
+			InternalAddr:            opts.AuthenticateInternalAddr.Host,
 			OverrideCertificateName: opts.OverrideCertificateName,
 			SharedSecret:            opts.SharedKey,
 			CA:                      opts.CA,