diff --git a/src/main/csharp/MessageConsumer.cs b/src/main/csharp/MessageConsumer.cs
index 9b03735..9e68fb3 100755
--- a/src/main/csharp/MessageConsumer.cs
+++ b/src/main/csharp/MessageConsumer.cs
@@ -57,7 +57,7 @@
 
         private int redeliveryTimeout = 500;
         protected bool disposed = false;
-        private long lastDeliveredSequenceId = 0;
+        private long lastDeliveredSequenceId = -1;
         private int ackCounter = 0;
         private int deliveredCounter = 0;
         private int additionalWindowSize = 0;