diff --git a/Engine/source/T3D/sfx/sfxEmitter.cpp b/Engine/source/T3D/sfx/sfxEmitter.cpp
index 0cd794ba1..1b091dc53 100644
--- a/Engine/source/T3D/sfx/sfxEmitter.cpp
+++ b/Engine/source/T3D/sfx/sfxEmitter.cpp
@@ -521,7 +521,7 @@ void SFXEmitter::unpackUpdate( NetConnection *conn, BitStream *stream )
    }
 
    // track
-   if (stream->readFlag()) // DirtyUpdateMask
+   if (_readDirtyFlag(stream, Track)) // DirtyUpdateMask
    {
       initialUpdate = false;
       UNPACK_ASSET(conn, Sound);