diff --git a/drivers/rtc/rs5c372.c b/drivers/rtc/rs5c372.c
index 82dd969..d6cd7c8 100644
--- a/drivers/rtc/rs5c372.c
+++ b/drivers/rtc/rs5c372.c
@@ -50,8 +50,8 @@
 #define rtc_debug 0	/* gcc will remove all the debug code for us */
 #endif
 
-#ifndef CFG_I2C_RTC_ADDR
-#define CFG_I2C_RTC_ADDR 0x32
+#ifndef CONFIG_SYS_I2C_RTC_ADDR
+#define CONFIG_SYS_I2C_RTC_ADDR 0x32
 #endif
 
 #define RS5C372_RAM_SIZE 0x10
@@ -77,7 +77,7 @@
 {
 	int ret;
 
-	ret = i2c_read(CFG_I2C_RTC_ADDR, 0, 0, buf, len);
+	ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, len);
 	if (ret != 0) {
 		printf("%s: failed to read\n", __FUNCTION__);
 		return ret;
@@ -117,7 +117,7 @@
 	buf[14] = 0; /* reg. 13 */
 	buf[15] = 0; /* reg. 14 */
 	buf[16] = USE_24HOUR_MODE; /* reg. 15 */
-	ret = i2c_write(CFG_I2C_RTC_ADDR, 0, 0, buf, RS5C372_RAM_SIZE+1);
+	ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, RS5C372_RAM_SIZE+1);
 	if (ret != 0) {
 		printf("%s: failed\n", __FUNCTION__);
 		return;
@@ -218,7 +218,7 @@
 	memset(buf, 0, sizeof(buf));
 
 	/* only read register 15 */
-	ret = i2c_read(CFG_I2C_RTC_ADDR, 0, 0, buf, 1);
+	ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 1);
 
 	if (ret == 0) {
 		/* need to save register 15 */
@@ -247,7 +247,7 @@
 			printf("WARNING: year should be between 1970 and 2069!\n");
 		buf[7] = bin2bcd(tmp->tm_year % 100);
 
-		ret = i2c_write(CFG_I2C_RTC_ADDR, 0, 0, buf, 8);
+		ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 8);
 		if (ret != 0) {
 			printf("rs5c372_set_datetime(), i2c_master_send() returned %d\n",ret);
 			return -1;