diff --git a/arch/arm/mach-shmobile/board-lager.c b/arch/arm/mach-shmobile/board-lager.c
index c5643e1d647a..aa8f1d915865 100644
--- a/arch/arm/mach-shmobile/board-lager.c
+++ b/arch/arm/mach-shmobile/board-lager.c
@@ -265,7 +265,7 @@ static struct mtd_partition spi_flash_part[] = {
 	},
 };
 
-static struct flash_platform_data spi_flash_data = {
+static const struct flash_platform_data spi_flash_data = {
 	.name           = "m25p80",
 	.parts          = spi_flash_part,
 	.nr_parts       = ARRAY_SIZE(spi_flash_part),