diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 0912acb82b800c36770601a84cc0fa5fff5a6de8..c2b8428dfb94c5000b3d8ea197fabebff2bf45f9 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -37,7 +37,7 @@
 #include "libata.h"
 #include "libata-transport.h"
 
-#define ATA_SCSI_RBUF_SIZE	4096
+#define ATA_SCSI_RBUF_SIZE	576
 
 static DEFINE_SPINLOCK(ata_scsi_rbuf_lock);
 static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE];