diff --git a/lib/src/client.dart b/lib/src/client.dart
index 549c62b7..6515d131 100644
--- a/lib/src/client.dart
+++ b/lib/src/client.dart
@@ -586,7 +586,7 @@ class Client extends MatrixApi {
   @override
   Future<DiscoveryInformation> getWellknown() async {
     final wellKnownResponse = await httpClient.get(
-      Uri.https(homeserver.toString(), '/.well-known/matrix/client'),
+      Uri.https(homeserver!.authority!, '/.well-known/matrix/client'),
     );
     final wellKnown = DiscoveryInformation.fromJson(
       jsonDecode(utf8.decode(wellKnownResponse.bodyBytes))