diff --git a/libuavcan_drivers/stm32/driver/src/internal.hpp b/libuavcan_drivers/stm32/driver/src/internal.hpp
index 1279ae2a9b..9bb7ac0be7 100644
--- a/libuavcan_drivers/stm32/driver/src/internal.hpp
+++ b/libuavcan_drivers/stm32/driver/src/internal.hpp
@@ -54,7 +54,7 @@
  * Priority mask for timer and CAN interrupts.
  */
 # ifndef UAVCAN_STM32_IRQ_PRIORITY_MASK
-#  define UAVCAN_STM32_IRQ_PRIORITY_MASK  CORTEX_PRIO_MASK(CORTEX_MAX_KERNEL_PRIORITY)
+#  define UAVCAN_STM32_IRQ_PRIORITY_MASK  CORTEX_MAX_KERNEL_PRIORITY
 # endif
 #endif