diff --git a/sys/dev/sound/pcm/buffer.h b/sys/dev/sound/pcm/buffer.h
--- a/sys/dev/sound/pcm/buffer.h
+++ b/sys/dev/sound/pcm/buffer.h
@@ -26,7 +26,7 @@
  * SUCH DAMAGE.
  */
 
-#define	SNDBUF_F_MANAGED	0x00000008
+#define	SNDBUF_F_MANAGED	0x00000001
 
 #define SNDBUF_NAMELEN	48