diff --git a/src/impl/unicast/NServiceBus.Unicast.Msmq/MsmqTransport.cs b/src/impl/unicast/NServiceBus.Unicast.Msmq/MsmqTransport.cs
index 6f06c297bb..3764dcf389 100644
--- a/src/impl/unicast/NServiceBus.Unicast.Msmq/MsmqTransport.cs
+++ b/src/impl/unicast/NServiceBus.Unicast.Msmq/MsmqTransport.cs
@@ -528,14 +528,16 @@ private void ClearFailuresForMessage(string messageId)
 
 	    private void IncrementFailuresForMessage(string messageId)
 	    {
-	        failuresPerMessageLocker.EnterWriteLock();
 	        try
 	        {
-	            if (!failuresPerMessage.ContainsKey(messageId))
+                failuresPerMessageLocker.EnterWriteLock();
+                
+                if (!failuresPerMessage.ContainsKey(messageId))
 	                failuresPerMessage[messageId] = 1;
 	            else
 	                failuresPerMessage[messageId] = failuresPerMessage[messageId] + 1;
 	        }
+            catch {} //intentionally swallow exceptions here
 	        finally
 	        {
 	            failuresPerMessageLocker.ExitWriteLock();