diff --git a/arch/arm/configs/spacecast_defconfig b/arch/arm/configs/spacecast_defconfig
index bba1fe1..ccd31b9 100644
--- a/arch/arm/configs/spacecast_defconfig
+++ b/arch/arm/configs/spacecast_defconfig
@@ -42,6 +42,7 @@
 CONFIG_NET_PING=y
 CONFIG_NET_TFTP=y
 CONFIG_NET_TFTP_PUSH=y
+# CONFIG_DRIVER_SERIAL_FAST_UART is not set
 CONFIG_NET_COMCERTO=y
 CONFIG_NET_COMCERTO_2000=y
 CONFIG_I2C=y
diff --git a/common/Kconfig b/common/Kconfig
index 54749c2..62ffd14 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -78,6 +78,7 @@
 
 config DEVELOPER_BAREBOX
 	depends on COMCERTO_BOOTLOADER
+	select DRIVER_SERIAL_FAST_UART
 	bool "Enable developer barebox build"
 	help
 		A developer barebox build skips most of the production setup;