diff --git a/ports/stm32/mpu.h b/ports/stm32/mpu.h
index e95a07da91..b3e2aec2d8 100644
--- a/ports/stm32/mpu.h
+++ b/ports/stm32/mpu.h
@@ -26,7 +26,7 @@
 #ifndef MICROPY_INCLUDED_STM32_MPU_H
 #define MICROPY_INCLUDED_STM32_MPU_H
 
-#if (defined(STM32F4) && defined(MICROPY_HW_ETH_MDC)) || defined(STM32F7) || defined(STM32H7)
+#if (defined(STM32F4) && defined(MICROPY_HW_ETH_MDC)) || defined(STM32F7) || defined(STM32H7) || defined(STM32WB)
 
 #define MPU_REGION_ETH      (MPU_REGION_NUMBER0)
 #define MPU_REGION_QSPI1    (MPU_REGION_NUMBER1)