diff --git a/configs/sim/nsh/defconfig b/configs/sim/nsh/defconfig
index ae3742a92d..2d354d0f9f 100644
--- a/configs/sim/nsh/defconfig
+++ b/configs/sim/nsh/defconfig
@@ -437,7 +437,7 @@ CONFIG_LIBC_EXECFUNCS=y
 CONFIG_EXECFUNCS_HAVE_SYMTAB=y
 CONFIG_EXECFUNCS_SYMTAB="g_symtab"
 CONFIG_EXECFUNCS_NSYMBOLS=0
-CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
+CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=2048
 CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=2048
 # CONFIG_LIBC_STRERROR is not set
 # CONFIG_LIBC_PERROR_STDOUT is not set
@@ -497,7 +497,6 @@ CONFIG_EXAMPLES_NSH=y
 # CONFIG_EXAMPLES_NX is not set
 # CONFIG_EXAMPLES_NXTERM is not set
 # CONFIG_EXAMPLES_NXFFS is not set
-# CONFIG_EXAMPLES_NXFLAT is not set
 # CONFIG_EXAMPLES_NXHELLO is not set
 # CONFIG_EXAMPLES_NXIMAGE is not set
 # CONFIG_EXAMPLES_NXLINES is not set