diff --git a/test/configs/stm32f103-serial.config b/test/configs/stm32f103-serial.config
index 36a453eae..ed9bb0dff 100644
--- a/test/configs/stm32f103-serial.config
+++ b/test/configs/stm32f103-serial.config
@@ -1,4 +1,4 @@
 # Base config file for STM32F1 ARM processor using serial communication
 CONFIG_MACH_STM32=y
 CONFIG_MACH_STM32F103=y
-CONFIG_STM32_SERIAL_USART1=y
+CONFIG_STM32_DIRECT_SERIAL_USART1=y