diff --git a/soc/arm/atmel_sam0/common/Kconfig.defconfig.series b/soc/arm/atmel_sam0/common/Kconfig.defconfig.series
index ef6e1e0ff83..8d9068424fd 100644
--- a/soc/arm/atmel_sam0/common/Kconfig.defconfig.series
+++ b/soc/arm/atmel_sam0/common/Kconfig.defconfig.series
@@ -10,8 +10,8 @@ config HWINFO_SAM0
 
 if USB_DEVICE_DRIVER
 
-config HEAP_MEM_POOL_SIZE
-	default 1024
+config HEAP_MEM_POOL_ADD_SIZE_SOC
+	def_int 1024
 
 endif # USB_DEVICE_DRIVER
 
diff --git a/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUAPP_QKAA b/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUAPP_QKAA
index 0c0f9f05926..f0f7f5a7d84 100644
--- a/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUAPP_QKAA
+++ b/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUAPP_QKAA
@@ -14,8 +14,9 @@ config NUM_IRQS
 config IEEE802154_NRF5
 	default IEEE802154
 
-config HEAP_MEM_POOL_SIZE
-	default 4096 if NRF_802154_SER_HOST
+config HEAP_MEM_POOL_ADD_SIZE_SOC
+	def_int 4096
+	depends on NRF_802154_SER_HOST
 
 if IPC_SERVICE_BACKEND_RPMSG
 
diff --git a/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUNET_QKAA b/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUNET_QKAA
index 88d53a3a0f7..0c60adc04f3 100644
--- a/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUNET_QKAA
+++ b/soc/arm/nordic_nrf/nrf53/Kconfig.defconfig.nrf5340_CPUNET_QKAA
@@ -15,8 +15,9 @@ config IEEE802154_NRF5
 	default y
 	depends on IEEE802154
 
-config HEAP_MEM_POOL_SIZE
-	default 4096 if NRF_802154_SER_RADIO
+config HEAP_MEM_POOL_ADD_SIZE_SOC
+	def_int 4096
+	depends on NRF_802154_SER_RADIO
 
 config LOG_DOMAIN_NAME
 	default "net"