diff --git a/sys/dev/sound/pcm/sound.h b/sys/dev/sound/pcm/sound.h
--- a/sys/dev/sound/pcm/sound.h
+++ b/sys/dev/sound/pcm/sound.h
@@ -126,9 +126,6 @@
 
 #define SD_F_PRIO_RD		0x10000000
 #define SD_F_PRIO_WR		0x20000000
-#define SD_F_PRIO_SET		(SD_F_PRIO_RD | SD_F_PRIO_WR)
-#define SD_F_DIR_SET		0x40000000
-#define SD_F_TRANSIENT		0xf0000000
 
 #define SD_F_BITS		"\020"					\
 				"\001SIMPLEX"				\
@@ -146,8 +143,7 @@
 				"\015EQ_BYPASSED"			\
 				"\016EQ_PC"				\
 				"\035PRIO_RD"				\
-				"\036PRIO_WR"				\
-				"\037DIR_SET"
+				"\036PRIO_WR"
 
 #define PCM_ALIVE(x)		((x) != NULL && (x)->lock != NULL &&	\
 				 !((x)->flags & SD_F_DYING))