diff --git a/boards/arm/stm32/nucleo-f429zi/configs/nsh/defconfig b/boards/arm/stm32/nucleo-f429zi/configs/nsh/defconfig
index 1d209e70b2..e4fdd06691 100644
--- a/boards/arm/stm32/nucleo-f429zi/configs/nsh/defconfig
+++ b/boards/arm/stm32/nucleo-f429zi/configs/nsh/defconfig
@@ -21,11 +21,9 @@ CONFIG_DEBUG_SYMBOLS=y
 CONFIG_FS_PROCFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
-CONFIG_HEAP2_BASE=0xD0000000
-CONFIG_HEAP2_SIZE=8388608
 CONFIG_INIT_ENTRYPOINT="nsh_main"
 CONFIG_INTELHEX_BINARY=y
-CONFIG_MM_REGIONS=3
+CONFIG_MM_REGIONS=2
 CONFIG_NSH_BUILTIN_APPS=y
 CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_LINELEN=64
@@ -42,8 +40,6 @@ CONFIG_START_DAY=6
 CONFIG_START_MONTH=12
 CONFIG_START_YEAR=2011
 CONFIG_STM32_DISABLE_IDLE_SLEEP_DURING_DEBUG=y
-CONFIG_STM32_EXTERNAL_RAM=y
-CONFIG_STM32_FMC=y
 CONFIG_STM32_JTAG_SW_ENABLE=y
 CONFIG_STM32_PWR=y
 CONFIG_SYSTEM_NSH=y