diff --git a/File Type - Wwise Stream.-.md b/File Type - Wwise Stream.-.md
index f84b6e0..1b14692 100644
--- a/File Type - Wwise Stream.-.md	
+++ b/File Type - Wwise Stream.-.md	
@@ -38,4 +38,5 @@ uint32 length;
 
 ---
 
-The `.stream` file contains a raw RIFF container, no extraneous fields. However, while the contained data is WAVE as per the type field, it uses an audio format that even ffmpeg cannot understand.
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+The `.stream` file contains a raw RIFF container, no extraneous fields. However, while the contained data is WAVE as per the type field, it uses an audio format that even ffmpeg cannot understand.
+The `wFormatTag` of the `struct WAVEFORMATEX` is set to `0xFFFF` which indicates an experimental/in-development format that has not been standardized or registered with Microsoft, yet.
\ No newline at end of file