diff --git a/src/soc/intel/denverton_ns/sata.c b/src/soc/intel/denverton_ns/sata.c
index d53d553..891d95f 100644
--- a/src/soc/intel/denverton_ns/sata.c
+++ b/src/soc/intel/denverton_ns/sata.c
@@ -31,7 +31,6 @@
 static void sata_init(struct device *dev)
 {
 	u32 reg32;
-	u16 reg16;
 	u32 abar;
 
 	printk(BIOS_DEBUG, "SATA: Initializing...\n");
@@ -46,10 +45,9 @@
 	printk(BIOS_DEBUG, "SATA: Controller in AHCI mode.\n");
 
 	/* Set the controller mode */
-	reg16 = pci_read_config16(dev, SATA_MAP);
-	reg16 &= ~(3 << 6);
-	reg16 |= SATA_MAP_AHCI;
-	pci_write_config16(dev, SATA_MAP, reg16);
+	reg32 = pci_read_config32(dev, SATAGC);
+	reg32 &= ~SATAGC_AHCI;
+	pci_write_config32(dev, SATAGC, reg32);
 
 	/* Initialize AHCI memory-mapped space */
 	abar = pci_read_config32(dev, PCI_BASE_ADDRESS_5);