diff --git a/net/http/client.ha b/net/http/client.ha
index fed803e..38f1227 100644
--- a/net/http/client.ha
+++ b/net/http/client.ha
@@ -57,6 +57,7 @@ fn new_request(client: *client, method: str, target: *uri::uri) request = {
 			req.target.port = 80;
 		case "https" =>
 			req.target.port = 443;
+		case => abort("net::http: unsupported URL scheme");
 		};
 	};