diff --git a/drivers/watchdog/stm32_iwdg.c b/drivers/watchdog/stm32_iwdg.c
index 6c501b7dba29570501b8926baacc0d4d7820fdd0..be64a8699de3d07d8638db4a7aa207304583ed98 100644
--- a/drivers/watchdog/stm32_iwdg.c
+++ b/drivers/watchdog/stm32_iwdg.c
@@ -140,7 +140,7 @@ static const struct watchdog_info stm32_iwdg_info = {
 	.identity	= "STM32 Independent Watchdog",
 };
 
-static struct watchdog_ops stm32_iwdg_ops = {
+static const struct watchdog_ops stm32_iwdg_ops = {
 	.owner		= THIS_MODULE,
 	.start		= stm32_iwdg_start,
 	.ping		= stm32_iwdg_ping,