diff --git a/nel/include/nel/sound/audio_mixer_user.h b/nel/include/nel/sound/audio_mixer_user.h
index 861c3fb16e..333729acb9 100644
--- a/nel/include/nel/sound/audio_mixer_user.h
+++ b/nel/include/nel/sound/audio_mixer_user.h
@@ -42,7 +42,7 @@
 
 // Current version is 2, Ryzom Live uses 1
 // Provided to allow compatibility with old binary files
-#define NLSOUND_SHEET_VERSION_BUILT 2
+#define NLSOUND_SHEET_VERSION_BUILT 1
 
 namespace NLLIGO {
 	class CLigoConfig;