diff --git a/arch/arm/mach-imx/mach-imx6ul.c b/arch/arm/mach-imx/mach-imx6ul.c
index acaf7056efa57be734cd5e447b5bae6d744b5b68..a38b16b699233b2b0948250efe32a030388b2e2a 100644
--- a/arch/arm/mach-imx/mach-imx6ul.c
+++ b/arch/arm/mach-imx/mach-imx6ul.c
@@ -84,7 +84,7 @@ static void __init imx6ul_init_late(void)
 		platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
 }
 
-static const char *imx6ul_dt_compat[] __initconst = {
+static const char * const imx6ul_dt_compat[] __initconst = {
 	"fsl,imx6ul",
 	NULL,
 };