diff --git a/soc/st/stm32/stm32f3/Kconfig.defconfig b/soc/st/stm32/stm32f3/Kconfig.defconfig
index 6c86f7905da..e1e87a8e5e5 100644
--- a/soc/st/stm32/stm32f3/Kconfig.defconfig
+++ b/soc/st/stm32/stm32f3/Kconfig.defconfig
@@ -9,7 +9,4 @@ if SOC_SERIES_STM32F3X
 
 rsource "Kconfig.defconfig.stm32f3*"
 
-config SOC_SERIES
-	default "stm32f3"
-
 endif # SOC_SERIES_STM32F3X
diff --git a/soc/st/stm32/stm32f7/Kconfig.defconfig b/soc/st/stm32/stm32f7/Kconfig.defconfig
index 3803fe103fe..ef1d4ba5283 100644
--- a/soc/st/stm32/stm32f7/Kconfig.defconfig
+++ b/soc/st/stm32/stm32f7/Kconfig.defconfig
@@ -9,7 +9,4 @@ if SOC_SERIES_STM32F7X
 
 rsource "Kconfig.defconfig.stm32f7*"
 
-config SOC_SERIES
-	default "stm32f7"
-
 endif # SOC_SERIES_STM32F7X
diff --git a/soc/st/stm32/stm32l4/Kconfig.defconfig b/soc/st/stm32/stm32l4/Kconfig.defconfig
index 7dcb3ff506c..3e4402b556e 100644
--- a/soc/st/stm32/stm32l4/Kconfig.defconfig
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig
@@ -10,7 +10,4 @@ if SOC_SERIES_STM32L4X
 
 rsource "Kconfig.defconfig.stm32l4*"
 
-config SOC_SERIES
-	default "stm32l4"
-
 endif # SOC_SERIES_STM32L4X