diff --git a/src/mainboard/getac/p470/ec_oem.c b/src/mainboard/getac/p470/ec_oem.c
index 26767d9965..c810953bab 100644
--- a/src/mainboard/getac/p470/ec_oem.c
+++ b/src/mainboard/getac/p470/ec_oem.c
@@ -4,9 +4,11 @@
 #include <arch/io.h>
 #include <delay.h>
 #include <ec/acpi/ec.h>
+#include <types.h>
+
 #include "ec_oem.h"
 
-int send_ec_oem_command(u8 command)
+enum cb_err send_ec_oem_command(u8 command)
 {
 	int timeout;
 
@@ -19,14 +21,14 @@ int send_ec_oem_command(u8 command)
 	if (!timeout) {
 		printk(BIOS_DEBUG, "Timeout while sending OEM command 0x%02x to EC!\n",
 				command);
-		// return -1;
+		// return CB_ERR;
 	}
 
 	outb(command, EC_OEM_SC);
-	return 0;
+	return CB_SUCCESS;
 }
 
-int send_ec_oem_data(u8 data)
+enum cb_err send_ec_oem_data(u8 data)
 {
 	int timeout;
 
@@ -39,12 +41,12 @@ int send_ec_oem_data(u8 data)
 	if (!timeout) {
 		printk(BIOS_DEBUG, "Timeout while sending OEM data 0x%02x to EC!\n",
 				data);
-		// return -1;
+		// return CB_ERR;
 	}
 
 	outb(data, EC_OEM_DATA);
 
-	return 0;
+	return CB_SUCCESS;
 }
 
 u8 recv_ec_oem_data(void)
diff --git a/src/mainboard/getac/p470/ec_oem.h b/src/mainboard/getac/p470/ec_oem.h
index 9200f0e104..5b5bbcd60f 100644
--- a/src/mainboard/getac/p470/ec_oem.h
+++ b/src/mainboard/getac/p470/ec_oem.h
@@ -3,6 +3,8 @@
 #ifndef _MAINBOARD_EC_OEM_H
 #define _MAINBOARD_EC_OEM_H
 
+#include <types.h>
+
 #define EC_OEM_DATA	0x68
 #define EC_OEM_SC	0x6c
 
@@ -21,8 +23,8 @@
 #define   BD_EC	0x83 // Burst Disable Embedded Controller
 #define   QR_EC	0x84 // Query Embedded Controller
 
-int send_ec_oem_command(u8 command);
-int send_ec_oem_data(u8 data);
+enum cb_err send_ec_oem_command(u8 command);
+enum cb_err send_ec_oem_data(u8 data);
 u8 recv_ec_oem_data(void);
 u8 ec_oem_read(u8 addr);