diff --git a/arch/arm/src/imxrt/imxrt_mpuinit.c b/arch/arm/src/imxrt/imxrt_mpuinit.c
index a8a1f4860fd..061c3b02e4a 100644
--- a/arch/arm/src/imxrt/imxrt_mpuinit.c
+++ b/arch/arm/src/imxrt/imxrt_mpuinit.c
@@ -150,14 +150,6 @@ void imxrt_mpu_initialize(void)
                        MPU_RASR_AP_RORO);  /* P:RO   U:RO
                                             * Instruction access */
 
-  mpu_configure_region(0x00000000,  1024 * 1024 * 1024,
-                       MPU_RASR_TEX_DEV  | /* Device
-                                            * Not Cacheable
-                                            * Not Bufferable
-                                            * Not Shareable      */
-                       MPU_RASR_AP_RWRW);  /* P:RW   U:RW
-                                            * Instruction access */
-
   mpu_configure_region(IMXRT_ITCM_BASE,  128 * 1024,
                        MPU_RASR_TEX_SO   | /* Ordered            */
                        MPU_RASR_C        | /* Cacheable          */