diff --git a/arch/arm/core/cortex_m/mpu/arm_mpu.c b/arch/arm/core/cortex_m/mpu/arm_mpu.c
index 2705a0e0ebf..30d93c94439 100644
--- a/arch/arm/core/cortex_m/mpu/arm_mpu.c
+++ b/arch/arm/core/cortex_m/mpu/arm_mpu.c
@@ -9,7 +9,6 @@
 #include <kernel.h>
 #include <soc.h>
 #include "arm_core_mpu_dev.h"
-#include <arch/arm/cortex_m/mpu/arm_core_mpu.h>
 #include <linker/linker-defs.h>
 
 #define LOG_LEVEL CONFIG_MPU_LOG_LEVEL
diff --git a/arch/arm/core/cortex_m/mpu/nxp_mpu.c b/arch/arm/core/cortex_m/mpu/nxp_mpu.c
index 96bdb8b3f91..3dcec2909c5 100644
--- a/arch/arm/core/cortex_m/mpu/nxp_mpu.c
+++ b/arch/arm/core/cortex_m/mpu/nxp_mpu.c
@@ -9,7 +9,6 @@
 #include <kernel.h>
 #include <soc.h>
 #include "arm_core_mpu_dev.h"
-#include <arch/arm/cortex_m/mpu/arm_core_mpu.h>
 #include <sys/__assert.h>
 #include <linker/linker-defs.h>
 
diff --git a/include/arch/arm/cortex_m/mpu/arm_core_mpu.h b/include/arch/arm/cortex_m/mpu/arm_core_mpu.h
deleted file mode 100644
index 83b1ebe6e59..00000000000
--- a/include/arch/arm/cortex_m/mpu/arm_core_mpu.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2017 Linaro Limited.
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#ifndef ZEPHYR_INCLUDE_ARCH_ARM_CORTEX_M_MPU_ARM_CORE_MPU_H_
-#define ZEPHYR_INCLUDE_ARCH_ARM_CORTEX_M_MPU_ARM_CORE_MPU_H_
-
-#include <kernel_structs.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @brief Use the HW-specific MPU driver to program
- *        the static MPU regions.
- *
- * Program the static MPU regions through the HW-specific
- * MPU driver. The function is meant to be invoked once,
- * during system initialization.
- */
-void z_arch_configure_static_mpu_regions(void);
-
-/**
- * @brief Use the HW-specific MPU driver to program
- *        the dynamic MPU regions.
- *
- * Program the dynamic MPU regions using the HW-specific MPU
- * driver. This function is meant to be invoked every time the
- * memory map is to be re-programmed, e.g during thread context
- * switch, entering user mode, reconfiguring memory domain, etc.
- *
- * @param thread pointer to the current k_thread context
- */
-void z_arch_configure_dynamic_mpu_regions(struct k_thread *thread);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ZEPHYR_INCLUDE_ARCH_ARM_CORTEX_M_MPU_ARM_CORE_MPU_H_ */