diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 09d422b9f7f737d6ba4a0c990212e7f33f1d4038..5fc292c2dfdf1b39548165cdbd03eb0dffdc5150 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -84,7 +84,7 @@ struct rtc_plat_data {
 	enum imx_rtc_type devtype;
 };
 
-static struct platform_device_id imx_rtc_devtype[] = {
+static const struct platform_device_id imx_rtc_devtype[] = {
 	{
 		.name = "imx1-rtc",
 		.driver_data = IMX1_RTC,