diff --git a/boards/arm/lpc31xx/ea3131/configs/pgnsh/defconfig b/boards/arm/lpc31xx/ea3131/configs/pgnsh/defconfig
index 4989b53cc8c..cf80de95b2f 100644
--- a/boards/arm/lpc31xx/ea3131/configs/pgnsh/defconfig
+++ b/boards/arm/lpc31xx/ea3131/configs/pgnsh/defconfig
@@ -18,7 +18,7 @@ CONFIG_ARCH_STACKDUMP=y
 CONFIG_BOARD_LOOPSPERMSEC=16945
 CONFIG_BOOT_RUNFROMISRAM=y
 CONFIG_BUILD_2PASS=y
-CONFIG_DISABLE_ENVIRON=y
+CONFIG_DEFAULT_SMALL=y
 CONFIG_FS_FAT=y
 CONFIG_HOST_WINDOWS=y
 CONFIG_INIT_ENTRYPOINT="nsh_main"
@@ -29,9 +29,6 @@ CONFIG_MMCSD=y
 CONFIG_MTD=y
 CONFIG_MTD_M25P=y
 CONFIG_NSH_ARCHINIT=y
-CONFIG_NSH_FILEIOSIZE=512
-CONFIG_NSH_LINELEN=64
-CONFIG_NSH_READLINE=y
 CONFIG_PAGING=y
 CONFIG_PAGING_BLOCKINGFILL=y
 CONFIG_PAGING_NDATA=32
@@ -41,7 +38,6 @@ CONFIG_PAGING_PAGESIZE=1024
 CONFIG_PAGING_STACKSIZE=2048
 CONFIG_PASS1_BUILDIR="boards/arm/lpc31xx/ea3131/locked"
 CONFIG_PASS1_OBJECT="locked.r"
-CONFIG_PREALLOC_TIMERS=4
 CONFIG_RAM_SIZE=196608
 CONFIG_RAM_START=0x11028000
 CONFIG_RAM_VSTART=0x11028000