diff --git a/src/mainboard/google/auron/smihandler.c b/src/mainboard/google/auron/smihandler.c
index fac07b1..c962bb9 100644
--- a/src/mainboard/google/auron/smihandler.c
+++ b/src/mainboard/google/auron/smihandler.c
@@ -14,6 +14,7 @@
  * GNU General Public License for more details.
  */
 
+#include <arch/acpi.h>
 #include <arch/io.h>
 #include <console/console.h>
 #include <cpu/x86/smm.h>
@@ -73,7 +74,7 @@
 {
 	/* Disable USB charging if required */
 	switch (slp_typ) {
-	case 3:
+	case ACPI_S3:
 		if (smm_get_gnvs()->s3u0 == 0) {
 			google_chromeec_set_usb_charge_mode(
 				0, USB_CHARGE_MODE_DISABLED);
@@ -87,7 +88,7 @@
 		/* Enable wake events */
 		google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS);
 		break;
-	case 5:
+	case ACPI_S5:
 		if (smm_get_gnvs()->s5u0 == 0) {
 			google_chromeec_set_usb_charge_mode(
 				0, USB_CHARGE_MODE_DISABLED);