diff --git a/lib/extensions/io_http_client.dart b/lib/extensions/io_http_client.dart
index 76aaaaa..02fd755 100644
--- a/lib/extensions/io_http_client.dart
+++ b/lib/extensions/io_http_client.dart
@@ -9,9 +9,9 @@ extension HttpClientResponseExtension on HttpClientResponse {
   bool get ok => statusCode < _badRequestStatusCode;
 
   Future<Uint8List> get bodyBytes async {
-    if (contentLength case final length when length != -1) {
-      final bytes = Uint8List(length);
+    if (contentLength case final length when !length.isNegative) {
       int index = 0;
+      final bytes = Uint8List(length);
       await for (final e in this) {
         bytes.setAll(index, e);
         index += e.length;
diff --git a/lib/extensions/list.dart b/lib/extensions/list.dart
index 7c81385..c23dac0 100644
--- a/lib/extensions/list.dart
+++ b/lib/extensions/list.dart
@@ -3,27 +3,27 @@ import "dart:async";
 import "package:discloud/cli/disposable.dart";
 
 extension ListDisposableExtension on List<Disposable> {
-  Future<void> dispose() async {
-    final futures = <Future>[];
+  Future<void> dispose() {
+    final futures = <Future<void>>[];
 
     removeWhere((item) {
       if (item.dispose() case final Future future) futures.add(future);
       return true;
     });
 
-    await futures.wait;
+    return futures.wait;
   }
 }
 
 extension ListStreamSubscriptionExtension<T> on List<StreamSubscription<T>> {
-  Future<void> cancel() async {
-    final futures = <Future>[];
+  Future<void> cancel() {
+    final futures = <Future<void>>[];
 
     removeWhere((item) {
       futures.add(item.cancel());
       return true;
     });
 
-    await futures.wait;
+    return futures.wait;
   }
 }