diff --git a/Source/Engine/Networking/NetworkMessage.h b/Source/Engine/Networking/NetworkMessage.h
index f83f9b828..ed1285ccd 100644
--- a/Source/Engine/Networking/NetworkMessage.h
+++ b/Source/Engine/Networking/NetworkMessage.h
@@ -72,6 +72,7 @@ public:
         ASSERT(Position + numBytes < BufferSize);
         Platform::MemoryCopy(Buffer + Position, bytes, numBytes);
         Position += numBytes;
+        Length = Position;
     }
 
     /// <summary>