diff --git a/soc/arm/st_stm32/stm32f4/Kconfig.defconfig.series b/soc/arm/st_stm32/stm32f4/Kconfig.defconfig.series
index 26eead6bef8..63725609480 100644
--- a/soc/arm/st_stm32/stm32f4/Kconfig.defconfig.series
+++ b/soc/arm/st_stm32/stm32f4/Kconfig.defconfig.series
@@ -25,6 +25,9 @@ config COUNTER
 config COUNTER_RTC_STM32_SUBSECONDS
 	default y if DT_HAS_ST_STM32_RTC_ENABLED
 
+config IDLE_STACK_SIZE
+	default 512
+
 endif # PM
 
 endif # SOC_SERIES_STM32F4X