diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
index 437f52073f6e..84cac87537a3 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.c
+++ b/arch/arm/mach-omap2/mmc-twl4030.c
@@ -59,7 +59,7 @@ static struct twl_mmc_controller {
 	struct omap_mmc_platform_data	*mmc;
 	u8		twl_vmmc_dev_grp;
 	u8		twl_mmc_dedicated;
-	char		name[HSMMC_NAME_LEN];
+	char		name[HSMMC_NAME_LEN + 1];
 } hsmmc[] = {
 	{
 		.twl_vmmc_dev_grp		= VMMC1_DEV_GRP,
@@ -349,7 +349,8 @@ void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers)
 			return;
 		}
 
-		sprintf(twl->name, "mmc%islot%i", c->mmc, 1);
+		snprintf(twl->name, ARRAY_SIZE(twl->name), "mmc%islot%i",
+				c->mmc, 1);
 		mmc->slots[0].name = twl->name;
 		mmc->nr_slots = 1;
 		mmc->slots[0].ocr_mask = MMC_VDD_165_195 |