diff --git a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f429xx b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f429xx
index b8286245434..7d706e8efab 100644
--- a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f429xx
+++ b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f429xx
@@ -5,7 +5,7 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-if SOC_STM32F429XX
+if SOC_STM32F429XI
 
 config SOC
 	string
@@ -15,4 +15,4 @@ config NUM_IRQS
 	int
 	default 91
 
-endif # SOC_STM32F429XX
+endif # SOC_STM32F429XI
diff --git a/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc b/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc
index 01e9d6d9ca0..4cce8ff43dc 100644
--- a/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc
+++ b/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc
@@ -18,7 +18,7 @@ config SOC_STM32F407XX
 config SOC_STM32F411XE
 	bool "STM32F411XE"
 
-config SOC_STM32F429XX
+config SOC_STM32F429XI
 	bool "STM32F429XX"
 
 endchoice
diff --git a/dts/arm/st/mem.h b/dts/arm/st/mem.h
index 145fe1065be..a3616a67e22 100644
--- a/dts/arm/st/mem.h
+++ b/dts/arm/st/mem.h
@@ -30,7 +30,7 @@
 #elif defined(CONFIG_SOC_STM32F411XE)
 #define DT_FLASH_SIZE		__SIZE_K(512)
 #define DT_SRAM_SIZE		__SIZE_K(128)
-#elif defined(CONFIG_SOC_STM32F429XX)
+#elif defined(CONFIG_SOC_STM32F429XI)
 #define DT_FLASH_SIZE		__SIZE_K(2048)
 #define DT_SRAM_SIZE		__SIZE_K(256)
 #elif defined(CONFIG_SOC_STM32L475XG)