diff --git a/boards/nxp/fmuk66-e/nuttx-config/nsh/defconfig b/boards/nxp/fmuk66-e/nuttx-config/nsh/defconfig
index 9c28b07896..ffd9866653 100644
--- a/boards/nxp/fmuk66-e/nuttx-config/nsh/defconfig
+++ b/boards/nxp/fmuk66-e/nuttx-config/nsh/defconfig
@@ -127,7 +127,6 @@ CONFIG_MTD_RAMTRON=y
 CONFIG_NETDEV_PHY_IOCTL=y
 CONFIG_NETINIT_THREAD=y
 CONFIG_NETINIT_THREAD_PRIORITY=49
-CONFIG_NETUTILS_TELNETD=y
 CONFIG_NET_ARP_IPIN=y
 CONFIG_NET_ARP_SEND=y
 CONFIG_NET_BROADCAST=y
@@ -157,7 +156,6 @@ CONFIG_NSH_DISABLE_UNAME=y
 CONFIG_NSH_DISABLE_WGET=y
 CONFIG_NSH_DISABLE_XD=y
 CONFIG_NSH_FILEIOSIZE=512
-CONFIG_NSH_IOBUFFER_SIZE=256
 CONFIG_NSH_LINELEN=128
 CONFIG_NSH_MAXARGUMENTS=15
 CONFIG_NSH_NESTDEPTH=8
@@ -165,8 +163,6 @@ CONFIG_NSH_READLINE=y
 CONFIG_NSH_ROMFSETC=y
 CONFIG_NSH_ROMFSSECTSIZE=128
 CONFIG_NSH_STRERROR=y
-CONFIG_NSH_TELNETD_CLIENTSTACKSIZE=1280
-CONFIG_NSH_TELNETD_DAEMONSTACKSIZE=1024
 CONFIG_NSH_VARS=y
 CONFIG_PIPES=y
 CONFIG_PREALLOC_TIMERS=50
@@ -204,10 +200,6 @@ CONFIG_SYSTEM_CUTERM_DEFAULT_BAUD=57600
 CONFIG_SYSTEM_NSH=y
 CONFIG_SYSTEM_PING=y
 CONFIG_TASK_NAME_SIZE=24
-CONFIG_TELNET_IOTHREAD_STACKSIZE=512
-CONFIG_TELNET_MAXLCLIENTS=1
-CONFIG_TELNET_RXBUFFER_SIZE=128
-CONFIG_TELNET_TXBUFFER_SIZE=128
 CONFIG_UART0_IFLOWCONTROL=y
 CONFIG_UART0_OFLOWCONTROL=y
 CONFIG_UART1_RXBUFSIZE=600
diff --git a/boards/nxp/fmuk66-v3/nuttx-config/nsh/defconfig b/boards/nxp/fmuk66-v3/nuttx-config/nsh/defconfig
index b9d1df401c..796e0f9017 100644
--- a/boards/nxp/fmuk66-v3/nuttx-config/nsh/defconfig
+++ b/boards/nxp/fmuk66-v3/nuttx-config/nsh/defconfig
@@ -125,7 +125,6 @@ CONFIG_MTD_RAMTRON=y
 CONFIG_NETDEV_PHY_IOCTL=y
 CONFIG_NETINIT_THREAD=y
 CONFIG_NETINIT_THREAD_PRIORITY=49
-CONFIG_NETUTILS_TELNETD=y
 CONFIG_NET_ARP_IPIN=y
 CONFIG_NET_ARP_SEND=y
 CONFIG_NET_BROADCAST=y
@@ -155,7 +154,6 @@ CONFIG_NSH_DISABLE_UNAME=y
 CONFIG_NSH_DISABLE_WGET=y
 CONFIG_NSH_DISABLE_XD=y
 CONFIG_NSH_FILEIOSIZE=512
-CONFIG_NSH_IOBUFFER_SIZE=256
 CONFIG_NSH_LINELEN=128
 CONFIG_NSH_MAXARGUMENTS=15
 CONFIG_NSH_NESTDEPTH=8
@@ -163,8 +161,6 @@ CONFIG_NSH_READLINE=y
 CONFIG_NSH_ROMFSETC=y
 CONFIG_NSH_ROMFSSECTSIZE=128
 CONFIG_NSH_STRERROR=y
-CONFIG_NSH_TELNETD_CLIENTSTACKSIZE=1280
-CONFIG_NSH_TELNETD_DAEMONSTACKSIZE=1024
 CONFIG_NSH_VARS=y
 CONFIG_PIPES=y
 CONFIG_PREALLOC_TIMERS=50
@@ -202,10 +198,6 @@ CONFIG_SYSTEM_CUTERM_DEFAULT_BAUD=57600
 CONFIG_SYSTEM_NSH=y
 CONFIG_SYSTEM_PING=y
 CONFIG_TASK_NAME_SIZE=24
-CONFIG_TELNET_IOTHREAD_STACKSIZE=512
-CONFIG_TELNET_MAXLCLIENTS=1
-CONFIG_TELNET_RXBUFFER_SIZE=128
-CONFIG_TELNET_TXBUFFER_SIZE=128
 CONFIG_UART1_RXBUFSIZE=600
 CONFIG_UART1_TXBUFSIZE=1100
 CONFIG_UART4_BAUD=57600