diff --git a/src/flash/nor/stm32h7x.c b/src/flash/nor/stm32h7x.c
index ad76af4ad..d21e9fa5e 100644
--- a/src/flash/nor/stm32h7x.c
+++ b/src/flash/nor/stm32h7x.c
@@ -78,9 +78,6 @@
 #define OPT_LOCK       (1 << 0)
 #define OPT_START      (1 << 1)
 
-/* FLASH_OPTCUR bit definitions (reading) */
-#define IWDG1_HW       (1 << 4)
-
 /* register unlock keys */
 #define KEY1           0x45670123
 #define KEY2           0xCDEF89AB
@@ -109,7 +106,6 @@ struct stm32x_options {
 	uint8_t user_options;
 	uint8_t user2_options;
 	uint8_t user3_options;
-	uint8_t independent_watchdog_selection;
 };
 
 struct stm32h7x_part_info {
@@ -327,11 +323,6 @@ static int stm32x_read_options(struct flash_bank *bank)
 	stm32x_info->option_bytes.user2_options = (optiondata >> 16) & 0xff;
 	stm32x_info->option_bytes.user3_options = (optiondata >> 24) & 0x83;
 
-	if (optiondata & IWDG1_HW)
-		stm32x_info->option_bytes.independent_watchdog_selection = 1;
-	else
-		stm32x_info->option_bytes.independent_watchdog_selection = 0;
-
 	if (stm32x_info->option_bytes.RDP != 0xAA)
 		LOG_INFO("Device Security Bit Set");
 
@@ -368,11 +359,6 @@ static int stm32x_write_options(struct flash_bank *bank)
 	optiondata |= (stm32x_info->option_bytes.user2_options & 0xff) << 16;
 	optiondata |= (stm32x_info->option_bytes.user3_options & 0x83) << 24;
 
-	if (stm32x_info->option_bytes.independent_watchdog_selection)
-		optiondata |= IWDG1_HW;
-	else
-		optiondata &= ~IWDG1_HW;
-
 	/* program options */
 	retval = target_write_u32(target, FLASH_REG_BASE_B0 + FLASH_OPTPRG, optiondata);
 		if (retval != ERROR_OK)