diff --git a/src/Psl/Channel/bounded.php b/src/Psl/Channel/bounded.php
index 379ea293..e909bdd6 100644
--- a/src/Psl/Channel/bounded.php
+++ b/src/Psl/Channel/bounded.php
@@ -13,7 +13,7 @@
  *
  * @param positive-int $capacity
  *
- * @return array{0: ReceiverInterface<T>, 1: SenderInterface<T>}
+ * @return array{ReceiverInterface<T>, SenderInterface<T>}
  */
 function bounded(int $capacity): array
 {
diff --git a/src/Psl/Channel/unbounded.php b/src/Psl/Channel/unbounded.php
index dd1f2c55..002905b9 100644
--- a/src/Psl/Channel/unbounded.php
+++ b/src/Psl/Channel/unbounded.php
@@ -11,7 +11,7 @@
  *
  * @template T
  *
- * @return array{0: ReceiverInterface<T>, 1: SenderInterface<T>}
+ * @return array{ReceiverInterface<T>, SenderInterface<T>}
  */
 function unbounded(): array
 {