diff --git a/drivers/soc/samsung/cal-if/fvmap.c b/drivers/soc/samsung/cal-if/fvmap.c
index a7bedd15eb59..770d500e844c 100644
--- a/drivers/soc/samsung/cal-if/fvmap.c
+++ b/drivers/soc/samsung/cal-if/fvmap.c
@@ -268,7 +268,7 @@ static void check_percent_margin(struct rate_volt_header *head, unsigned int num
 
 static void fvmap_copy_from_sram(void __iomem *map_base, void __iomem *sram_base)
 {
-	struct fvmap_header *fvmap_header, *header;
+	volatile struct fvmap_header *fvmap_header, *header;
 	struct rate_volt_header *old, *new;
 	struct clocks *clks;
 	struct pll_header *plls;