diff --git a/ports/alif/mpu.c b/ports/alif/mpu.c
index 60753674ae..9a051794de 100644
--- a/ports/alif/mpu.c
+++ b/ports/alif/mpu.c
@@ -54,6 +54,10 @@ static const ARM_MPU_Region_t mpu_table[] __STARTUP_RO_DATA_ATTRIBUTE = {
         .RBAR = ARM_MPU_RBAR(0xA0000000, ARM_MPU_SH_NON, 1, 1, 0),
         .RLAR = ARM_MPU_RLAR(0xBFFFFFFF, MP_MPU_ATTR_NORMAL_NON_CACHEABLE)
     },
+    [MP_MPU_REGION_OSPI1_XIP] = {   /* OSPI1 XIP flash - 512MB : RO-1, NP-1, XN-0  */
+        .RBAR = ARM_MPU_RBAR(0xC0000000, ARM_MPU_SH_NON, 1, 1, 0),
+        .RLAR = ARM_MPU_RLAR(0xDFFFFFFF, MP_MPU_ATTR_NORMAL_NON_CACHEABLE)
+    },
 };
 
 void MPU_Load_Regions(void) {
diff --git a/ports/alif/mpu.h b/ports/alif/mpu.h
index 1d3602941e..f4df496683 100644
--- a/ports/alif/mpu.h
+++ b/ports/alif/mpu.h
@@ -38,6 +38,7 @@
 #define MP_MPU_REGION_MRAM                  (3)
 #define MP_MPU_REGION_OSPI_REGISTERS        (4)
 #define MP_MPU_REGION_OSPI0_XIP             (5)
-#define MP_MPU_REGION_OPENAMP               (6)
+#define MP_MPU_REGION_OSPI1_XIP             (6)
+#define MP_MPU_REGION_OPENAMP               (7)
 
 void mpu_config_mram(bool read_only);