diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 25929123ffff3fdd6a927aa4113a232c2c074708..cef2e70d64f8d57d2e62bbec19a5fda752e05d40 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1041,7 +1041,7 @@ static void ahci_host_intr(struct ata_port *ap)
 	/* hmmm... a spurious interupt */
 
 	/* some devices send D2H reg with I bit set during NCQ command phase */
-	if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS)
+	if (ap->sactive && (status & PORT_IRQ_D2H_REG_FIS))
 		return;
 
 	/* ignore interim PIO setup fis interrupts */