diff --git a/metropolis/node/core/rpc/client.go b/metropolis/node/core/rpc/client.go
index 8619d19..4b64654 100644
--- a/metropolis/node/core/rpc/client.go
+++ b/metropolis/node/core/rpc/client.go
@@ -94,7 +94,6 @@
 		Certificate: [][]byte{certificateBytes},
 		PrivateKey:  private,
 	}
-	opts = append(opts)
 	return NewAuthenticatedCredentials(certificate, opts...), nil
 }