diff --git a/metropolis/cli/metroctl/core/rpc.go b/metropolis/cli/metroctl/core/rpc.go
index 8d7565f..00f1f01 100644
--- a/metropolis/cli/metroctl/core/rpc.go
+++ b/metropolis/cli/metroctl/core/rpc.go
@@ -58,7 +58,7 @@
 			Certificate: [][]byte{ocert.Raw},
 			PrivateKey:  opkey,
 		}
-		creds := rpc.NewAuthenticatedCredentials(tlsc, nil)
+		creds := rpc.NewAuthenticatedCredentials(tlsc, rpc.WantInsecure())
 		dialOpts = append(dialOpts, grpc.WithTransportCredentials(creds))
 	}