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-rw-r--r--ports/stm32/mpu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/stm32/mpu.h b/ports/stm32/mpu.h
index 2541d86bf..1efe93a68 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(STM32F7) || defined(STM32H7)
+#if defined(STM32F7) || defined(STM32H7) || defined(MICROPY_HW_ETH_MDC)
#define MPU_REGION_ETH (MPU_REGION_NUMBER0)
#define MPU_REGION_QSPI1 (MPU_REGION_NUMBER1)