fix for: https://issues.apache.org/jira/browse/AMQNET-313
diff --git a/src/main/csharp/MessageConsumer.cs b/src/main/csharp/MessageConsumer.cs
index 27c8b2f..f2c1205 100755
--- a/src/main/csharp/MessageConsumer.cs
+++ b/src/main/csharp/MessageConsumer.cs
@@ -878,7 +878,7 @@
         {
             if(this.listener != null)
             {
-                throw new NMSException("Cannot set Async listeners on Consumers with a prefetch limit of zero");
+                throw new NMSException("Cannot perform a Synchronous Receive when there is a registered asynchronous listener.");
             }
         }