diff --git a/boards/nxp/mr-canhubk3/nuttx-config/nsh/defconfig b/boards/nxp/mr-canhubk3/nuttx-config/nsh/defconfig
index 2298ed6f02..a01c561257 100644
--- a/boards/nxp/mr-canhubk3/nuttx-config/nsh/defconfig
+++ b/boards/nxp/mr-canhubk3/nuttx-config/nsh/defconfig
@@ -69,7 +69,6 @@ CONFIG_MEMSET_64BIT=y
 CONFIG_MEMSET_OPTSPEED=y
 CONFIG_MMCSD=y
 CONFIG_MMCSD_SPICLOCK=7500000
-CONFIG_MM_REGIONS=2
 CONFIG_MTD=y
 CONFIG_MTD_MX25RXX=y
 CONFIG_MTD_PARTITION=y
@@ -122,7 +121,6 @@ CONFIG_PTHREAD_STACK_MIN=512
 CONFIG_RAM_SIZE=272000
 CONFIG_RAM_START=0x20400000
 CONFIG_RAW_BINARY=y
-CONFIG_S32K3XX_DTCM_HEAP=y
 CONFIG_S32K3XX_EDMA=y
 CONFIG_S32K3XX_EDMA_EDBG=y
 CONFIG_S32K3XX_EDMA_NTCD=64