diff --git a/Runtime/Utils/CDRSerializer.cs b/Runtime/Utils/CDRSerializer.cs
index 1363f33..8555c90 100644
--- a/Runtime/Utils/CDRSerializer.cs
+++ b/Runtime/Utils/CDRSerializer.cs
@@ -251,7 +251,7 @@ private static void AlignStream(BinaryWriter writer, int alignment)
             {
                 using (BinaryReader reader = new BinaryReader(ms))
                 {
-                    reader.BaseStream.Seek(4, SeekOrigin.Begin); // Skip the first 4 header bytes
+                    if(ROS2Serialization) reader.BaseStream.Seek(4, SeekOrigin.Begin); // Skip the first 4 header bytes
                     return (T)DeserializeObject(reader, typeof(T));
                 }
             }