diff --git a/eventlet/twistedutil/protocol.py b/eventlet/twistedutil/protocol.py
index 0055c42..45278a5 100644
--- a/eventlet/twistedutil/protocol.py
+++ b/eventlet/twistedutil/protocol.py
@@ -29,7 +29,7 @@ class Protocol(twistedProtocol):
         spawn(self.channel.send, data)
 
     def connectionLost(self, reason):
-        self.channel.send_exception(reason.value)
+        spawn(self.channel.send_exception, reason.value)
         self.channel = None # QQQ channel creates a greenlet. does it actually finish and memory is reclaimed?
 
 
diff --git a/eventlet/twistedutil/protocols/basic.py b/eventlet/twistedutil/protocols/basic.py
index 325cd71..03d817e 100644
--- a/eventlet/twistedutil/protocols/basic.py
+++ b/eventlet/twistedutil/protocols/basic.py
@@ -9,7 +9,7 @@ class LineOnlyReceiver(basic.LineOnlyReceiver):
         spawn(self.channel.send, line)
 
     def connectionLost(self, reason):
-        self.channel.send_exception(reason.value)
+        spawn(self.channel.send_exception, reason.value)
 
 class LineOnlyReceiverBuffer(BaseBuffer):