diff --git a/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h b/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
index 1883980f9..e85690fda 100644
--- a/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
+++ b/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
@@ -238,7 +238,7 @@
 /*
  * CAN driver system settings.
  */
-#define STM32_CAN_USE_FDCAN1                TRUE
+#define STM32_CAN_USE_FDCAN1                FALSE
 #define STM32_CAN_USE_FDCAN2                FALSE
 
 /*