diff --git a/demos/AVR-AT90CANx-GCC/mcuconf.h b/demos/AVR-AT90CANx-GCC/mcuconf.h
index d32f7a4ff..e42588cd9 100644
--- a/demos/AVR-AT90CANx-GCC/mcuconf.h
+++ b/demos/AVR-AT90CANx-GCC/mcuconf.h
@@ -65,7 +65,7 @@
  * SERIAL driver system settings.
  */
 #define AVR_SERIAL_USE_USART0              TRUE
-#define AVR_SERIAL_USE_USART1              FALSE
+#define AVR_SERIAL_USE_USART1              TRUE
 
 /*
  * I2C driver system settings.