diff --git a/arch/xtensa/src/common/mpu.h b/arch/xtensa/src/common/mpu.h
index 75d1ae38bea..57aa7e99211 100644
--- a/arch/xtensa/src/common/mpu.h
+++ b/arch/xtensa/src/common/mpu.h
@@ -210,7 +210,7 @@ void mpu_control(bool enable);
  ****************************************************************************/
 
 void mpu_configure_region(uintptr_t base, size_t size,
-            uint8_t acc, uint16_t memtype);
+                          uint32_t acc, uint32_t memtype);
 
 /****************************************************************************
  * Name: mpu_priv_stronglyordered
diff --git a/arch/xtensa/src/common/xtensa_mpu.c b/arch/xtensa/src/common/xtensa_mpu.c
index 39f2c85f506..4d88495b02f 100644
--- a/arch/xtensa/src/common/xtensa_mpu.c
+++ b/arch/xtensa/src/common/xtensa_mpu.c
@@ -94,7 +94,7 @@ void mpu_control(bool enable)
  ****************************************************************************/
 
 void mpu_configure_region(uintptr_t base, size_t size,
-            uint8_t acc, uint16_t memtype)
+                          uint32_t acc, uint32_t memtype)
 {
   unsigned int region = mpu_allocregion();
   uint32_t at;