diff --git a/kcp2k/Assets/kcp2k/highlevel/KcpConnection.cs b/kcp2k/Assets/kcp2k/highlevel/KcpConnection.cs
index ecfe5622..9f71b2e5 100644
--- a/kcp2k/Assets/kcp2k/highlevel/KcpConnection.cs
+++ b/kcp2k/Assets/kcp2k/highlevel/KcpConnection.cs
@@ -561,7 +561,7 @@ void SendUnreliable(ArraySegment<byte> message)
             {
                 // copy channel header, data into raw send buffer, then send
                 rawSendBuffer[0] = (byte)KcpChannel.Unreliable;
-                Buffer.BlockCopy(message.Array, 0, rawSendBuffer, 1, message.Count);
+                Buffer.BlockCopy(message.Array, message.Offset, rawSendBuffer, 1, message.Count);
                 RawSend(rawSendBuffer, message.Count + 1);
             }
             // otherwise content is larger than MaxMessageSize. let user know!