ClosedSendChannelException is a subclass of CancellationException
diff --git a/kotlinx-coroutines-core/src/main/kotlin/kotlinx/coroutines/experimental/channels/Channel.kt b/kotlinx-coroutines-core/src/main/kotlin/kotlinx/coroutines/experimental/channels/Channel.kt
index 59c503c..fc97bb9 100644
--- a/kotlinx-coroutines-core/src/main/kotlin/kotlinx/coroutines/experimental/channels/Channel.kt
+++ b/kotlinx-coroutines-core/src/main/kotlin/kotlinx/coroutines/experimental/channels/Channel.kt
@@ -211,7 +211,7 @@
* that was closed _normally_. A _failed_ channel rethrows the original [close][SendChannel.close] cause
* exception on send attempts.
*/
-public class ClosedSendChannelException(message: String?) : IllegalStateException(message)
+public class ClosedSendChannelException(message: String?) : CancellationException(message)
/**
* Indicates attempt to [receive][ReceiveChannel.receive] on [isClosedForReceive][ReceiveChannel.isClosedForReceive]