diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index da5bd33..8263b3a 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -32,6 +32,7 @@
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
+#include <linux/dma-mapping.h>
 #include "scsi.h"
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>