diff --git a/arch/arm/src/stm32/Kconfig b/arch/arm/src/stm32/Kconfig
index d1098add85..22564254cf 100644
--- a/arch/arm/src/stm32/Kconfig
+++ b/arch/arm/src/stm32/Kconfig
@@ -2488,7 +2488,6 @@ config STM32_RTC
 	bool "RTC"
 	default n
 	select RTC
-	depends on !RTC_EXTERNAL
 
 config STM32_USBHOST
 	bool
diff --git a/arch/arm/src/stm32f7/Kconfig b/arch/arm/src/stm32f7/Kconfig
index ca9ae596bb..9bcb24df6d 100644
--- a/arch/arm/src/stm32f7/Kconfig
+++ b/arch/arm/src/stm32f7/Kconfig
@@ -1426,7 +1426,6 @@ config STM32F7_RTC
 	bool "RTC"
 	default n
 	select RTC
-	depends on !RTC_EXTERNAL
 
 config STM32F7_PWR
 	bool "PWR"
diff --git a/arch/arm/src/stm32l4/Kconfig b/arch/arm/src/stm32l4/Kconfig
index d3dde3b4ed..68bf1845af 100644
--- a/arch/arm/src/stm32l4/Kconfig
+++ b/arch/arm/src/stm32l4/Kconfig
@@ -805,7 +805,6 @@ config STM32L4_RTC
 	bool "RTC"
 	default n
 	select RTC
-	depends on !RTC_EXTERNAL
 
 config STM32L4_HAVE_SDMMC1
 	bool