diff --git a/chronos/streams/chunkstream.nim b/chronos/streams/chunkstream.nim
index a58e4dd..104587e 100644
--- a/chronos/streams/chunkstream.nim
+++ b/chronos/streams/chunkstream.nim
@@ -22,7 +22,7 @@ type
 
   ChunkedStreamWriter* = ref object of AsyncStreamWriter
 
-  ChunkedStreamError* = object of Exception
+  ChunkedStreamError* = object of CatchableError
   ChunkedStreamTimeoutError* = object of ChunkedStreamError
   ChunkedStreamProtocolError* = object of ChunkedStreamError