diff --git a/configs/sim/nsh/defconfig b/configs/sim/nsh/defconfig
index 1b4c905f1dd..056fb7762f7 100644
--- a/configs/sim/nsh/defconfig
+++ b/configs/sim/nsh/defconfig
@@ -67,10 +67,11 @@ CONFIG_ARCH="sim"
 #
 # Simulation Configuration Options
 #
-CONFIG_SIM_M32=y
 CONFIG_HOST_X86_64=y
 # CONFIG_HOST_X86 is not set
-# CONFIG_SIM_WALLTIME is not set
+# CONFIG_SIM_M32 is not set
+CONFIG_SIM_WALLTIME=y
+# CONFIG_SIM_SPIFLASH is not set
 
 #
 # Architecture Options
@@ -168,6 +169,9 @@ CONFIG_PREALLOC_TIMERS=8
 #
 # Tasks and Scheduling
 #
+# CONFIG_INIT_NONE is not set
+CONFIG_INIT_ENTRYPOINT=y
+# CONFIG_INIT_FILEPATH is not set
 CONFIG_USER_ENTRYPOINT="nsh_main"
 CONFIG_RR_INTERVAL=0
 CONFIG_TASK_NAME_SIZE=32
@@ -340,6 +344,8 @@ CONFIG_SERIAL=y
 # CONFIG_DISABLE_PSEUDOFS_OPERATIONS is not set
 CONFIG_FS_READABLE=y
 CONFIG_FS_WRITABLE=y
+# CONFIG_FS_NAMED_SEMAPHORES is not set
+CONFIG_FS_MQUEUE_MPATH="/var/mqueue"
 # CONFIG_FS_RAMMAP is not set
 CONFIG_FS_FAT=y
 CONFIG_FAT_LCNAMES=y
@@ -619,7 +625,9 @@ CONFIG_NSH_ROMFSMOUNTPT="/etc"
 CONFIG_NSH_INITSCRIPT="init.d/rcS"
 CONFIG_NSH_ROMFSDEVNO=1
 CONFIG_NSH_ROMFSSECTSIZE=64
+CONFIG_NSH_DEFAULTROMFS=y
 # CONFIG_NSH_ARCHROMFS is not set
+# CONFIG_NSH_CUSTOMROMFS is not set
 CONFIG_NSH_FATDEVNO=2
 CONFIG_NSH_FATSECTSIZE=512
 CONFIG_NSH_FATNSECTORS=1024