diff --git a/Network/AMQP/Internal.hs b/Network/AMQP/Internal.hs
--- a/Network/AMQP/Internal.hs
+++ b/Network/AMQP/Internal.hs
@@ -778,7 +778,7 @@
     SimpleMethod Channel_close_ok <- request c $ SimpleMethod $ Channel_close 0 (ShortString "") 0 0
     withMVar (connChannels $ connection c) $ \chans -> do
         case IM.lookup (fromIntegral $ channelID c) chans of
-            Just (_, thrID) -> killThread thrID
+            Just (_, thrID) -> throwTo thrID $ ChannelClosedException Normal "closeChannel was called"
             Nothing -> return ()
 
 -- | writes multiple frames to the channel atomically
diff --git a/amqp.cabal b/amqp.cabal
--- a/amqp.cabal
+++ b/amqp.cabal
@@ -1,5 +1,5 @@
 Name:                amqp
-Version:             0.21.0
+Version:             0.22.0
 Synopsis:            Client library for AMQP servers (currently only RabbitMQ)
 Description:         Client library for AMQP servers (currently only RabbitMQ)
 License:             BSD3
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,7 @@
+### Version 0.22.0
+
+* `closeChannel` now uses a `ChannelClosedException` to kill the channel-thread instead of `ThreadKilled`. This fixes a bug in 0.21.0 that led to errors being printed on the screen when `closeChannel` was called.
+
 ### Version 0.21.0
 
 * added method `isNormalChannelClose`