diff --git a/sys/dev/sound/midi/mpu401.c b/sys/dev/sound/midi/mpu401.c
--- a/sys/dev/sound/midi/mpu401.c
+++ b/sys/dev/sound/midi/mpu401.c
@@ -123,14 +123,8 @@
 */
 #define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0)
 #define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0)
-#if 0
-#define D(x,l) printf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"")
-#else
-#define D(x,l)
-#endif
 	i = 0;
 	s = STATUS(m);
-	D(s, 1);
 	while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) {
 		b[i] = READ(m);
 /*