diff --git a/sys/dev/sound/isa/mpu.c b/sys/dev/sound/isa/mpu.c
index 4f1f0341383..af3909f5562 100644
--- a/sys/dev/sound/isa/mpu.c
+++ b/sys/dev/sound/isa/mpu.c
@@ -42,7 +42,6 @@
 #include <machine/cpufunc.h>
 
 #include <isa/isavar.h>
-#include <dev/sio/sioreg.h>
 #include <dev/ic/ns16550.h>
 
 static devclass_t midi_devclass;
diff --git a/sys/dev/sound/isa/uartsio.c b/sys/dev/sound/isa/uartsio.c
index 5353b874b4e..1a72431924e 100644
--- a/sys/dev/sound/isa/uartsio.c
+++ b/sys/dev/sound/isa/uartsio.c
@@ -47,7 +47,6 @@
  */
 
 #include <dev/sio/sioreg.h>
-#include <dev/ic/ns16550.h>
 #include <dev/sound/midi/midi.h>
 
 /* XXX What about a PCI uart? */