diff --git a/os/hal/ports/AVR/XMEGA/ATXMEGAxxxA4U/platform.mk b/os/hal/ports/AVR/XMEGA/ATXMEGAxxxA4U/platform.mk
index 25a0095a7..5461317ef 100644
--- a/os/hal/ports/AVR/XMEGA/ATXMEGAxxxA4U/platform.mk
+++ b/os/hal/ports/AVR/XMEGA/ATXMEGAxxxA4U/platform.mk
@@ -7,6 +7,7 @@ PLATFORMINC = ${CHIBIOS}/os/hal/ports/AVR/XMEGA/ATXMEGAxxxA4U
 # Drivers compatible with the platform.
 include $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/GPIOv1/driver.mk
 include $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/driver.mk
+include $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/USARTv1/driver.mk
 
 # Shared variables
 ALLCSRC += $(PLATFORMSRC)