diff --git a/arch/arm/core/cortex_m/mpu/arm_core_mpu.c b/arch/arm/core/cortex_m/mpu/arm_core_mpu.c
index 4a380a794675c..670eed0e83855 100644
--- a/arch/arm/core/cortex_m/mpu/arm_core_mpu.c
+++ b/arch/arm/core/cortex_m/mpu/arm_core_mpu.c
@@ -9,7 +9,7 @@
 #include <kernel.h>
 #include <soc.h>
 
-#include <arch/arm/cortex_m/mpu/arm_core_mpu_dev.h>
+#include "arm_core_mpu_dev.h"
 #include <linker/linker-defs.h>
 
 #define LOG_LEVEL CONFIG_MPU_LOG_LEVEL
diff --git a/include/arch/arm/cortex_m/mpu/arm_core_mpu_dev.h b/arch/arm/core/cortex_m/mpu/arm_core_mpu_dev.h
similarity index 98%
rename from include/arch/arm/cortex_m/mpu/arm_core_mpu_dev.h
rename to arch/arm/core/cortex_m/mpu/arm_core_mpu_dev.h
index 0f813592fb83d..d55a06a9366ed 100644
--- a/include/arch/arm/cortex_m/mpu/arm_core_mpu_dev.h
+++ b/arch/arm/core/cortex_m/mpu/arm_core_mpu_dev.h
@@ -106,16 +106,6 @@ struct k_thread;
  * ARM_MPU support.
  */
 
-/**
- * @brief enable the MPU
- */
-void arm_core_mpu_enable(void);
-
-/**
- * @brief disable the MPU
- */
-void arm_core_mpu_disable(void);
-
 /**
  * @brief configure a set of fixed (static) MPU regions
  *
diff --git a/arch/arm/core/cortex_m/mpu/arm_mpu.c b/arch/arm/core/cortex_m/mpu/arm_mpu.c
index 6ace1d66bcc82..b847450f7f656 100644
--- a/arch/arm/core/cortex_m/mpu/arm_mpu.c
+++ b/arch/arm/core/cortex_m/mpu/arm_mpu.c
@@ -8,7 +8,7 @@
 #include <init.h>
 #include <kernel.h>
 #include <soc.h>
-#include <arch/arm/cortex_m/mpu/arm_core_mpu_dev.h>
+#include "arm_core_mpu_dev.h"
 #include <arch/arm/cortex_m/mpu/arm_core_mpu.h>
 #include <linker/linker-defs.h>
 
diff --git a/arch/arm/core/cortex_m/mpu/nxp_mpu.c b/arch/arm/core/cortex_m/mpu/nxp_mpu.c
index e26c7de45604a..cb6bbf54c5082 100644
--- a/arch/arm/core/cortex_m/mpu/nxp_mpu.c
+++ b/arch/arm/core/cortex_m/mpu/nxp_mpu.c
@@ -8,7 +8,7 @@
 #include <init.h>
 #include <kernel.h>
 #include <soc.h>
-#include <arch/arm/cortex_m/mpu/arm_core_mpu_dev.h>
+#include "arm_core_mpu_dev.h"
 #include <arch/arm/cortex_m/mpu/arm_core_mpu.h>
 #include <misc/__assert.h>
 #include <linker/linker-defs.h>
diff --git a/tests/kernel/mem_protect/userspace/src/main.c b/tests/kernel/mem_protect/userspace/src/main.c
index 3a7a312c38ca9..cd4d53618dc79 100644
--- a/tests/kernel/mem_protect/userspace/src/main.c
+++ b/tests/kernel/mem_protect/userspace/src/main.c
@@ -23,7 +23,7 @@
 #endif
 
 #if defined(CONFIG_ARM)
-#include <arch/arm/cortex_m/mpu/arm_core_mpu_dev.h>
+extern void arm_core_mpu_disable(void);
 #endif
 
 #define INFO(fmt, ...) printk(fmt, ##__VA_ARGS__)