diff --git a/boards/xtensa/esp32/esp32-sparrow-kit/configs/mqttc/defconfig b/boards/xtensa/esp32/esp32-sparrow-kit/configs/mqttc/defconfig
index cd82e4a96e7..dcfdad5f0fa 100644
--- a/boards/xtensa/esp32/esp32-sparrow-kit/configs/mqttc/defconfig
+++ b/boards/xtensa/esp32/esp32-sparrow-kit/configs/mqttc/defconfig
@@ -17,7 +17,6 @@ CONFIG_ARCH_BOARD_ESP32_SPARROWKIT=y
 CONFIG_ARCH_CHIP="esp32"
 CONFIG_ARCH_CHIP_ESP32=y
 CONFIG_ARCH_CHIP_ESP32WROVER=y
-# CONFIG_ARCH_INTERRUPTSTACK=2048
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_XTENSA=y
 CONFIG_AUDIO=y
@@ -27,8 +26,6 @@ CONFIG_AUDIO_I2S=y
 CONFIG_BME680_ENABLE_IIR_FILTER=y
 CONFIG_BOARD_LOOPSPERMSEC=16717
 CONFIG_BUILTIN=y
-# CONFIG_DEFAULT_TASK_STACKSIZE=4096
-# CONFIG_DEV_URANDOM=y
 CONFIG_DMA=y
 CONFIG_DMA_LINK=y
 CONFIG_DRIVERS_AUDIO=y
@@ -85,23 +82,15 @@ CONFIG_MMCSD_SPICLOCK=4000000
 CONFIG_MM_REGIONS=3
 CONFIG_NAME_MAX=48
 CONFIG_NETDB_DNSCLIENT=y
-# CONFIG_NETDB_DNSCLIENT_NAMESIZE=64
 CONFIG_NETDEV_LATEINIT=y
 CONFIG_NETDEV_PHY_IOCTL=y
 CONFIG_NETDEV_WIRELESS_IOCTL=y
-# CONFIG_NETUTILS_CJSON=y
-# CONFIG_NETUTILS_IPERF=y
-# CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETINIT_DHCPC=y
 CONFIG_NETINIT_DRIPADDR=0xc0a80101
 CONFIG_NETUTILS_MQTTC=y
 CONFIG_NET_BROADCAST=y
-# CONFIG_NET_ETH_PKTSIZE=1518
 CONFIG_NET_ICMP_SOCKET=y
-# CONFIG_NET_PREALLOC_DEVIF_CALLBACKS=32
-# CONFIG_NET_STATISTICS=y
 CONFIG_NET_TCP=y
-# CONFIG_NET_TCP_DELAYED_ACK=y
 CONFIG_NET_TCPBACKLOG=y
 CONFIG_NET_TCP_NOTIFIER=y
 CONFIG_NET_TCP_WRITE_BUFFERS=y
@@ -112,7 +101,6 @@ CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_LINELEN=300
 CONFIG_NSH_MMCSDSPIPORTNO=2
 CONFIG_NSH_READLINE=y
-# CONFIG_POSIX_SPAWN_DEFAULT_STACKSIZE=2048
 CONFIG_PREALLOC_TIMERS=4
 CONFIG_PTHREAD_MUTEX_TYPES=y
 CONFIG_PWM_MULTICHAN=y
@@ -143,5 +131,4 @@ CONFIG_VIDEO_FB=y
 CONFIG_WIRELESS=y
 CONFIG_WIRELESS_WAPI=y
 CONFIG_WIRELESS_WAPI_CMDTOOL=y
-# CONFIG_WIRELESS_WAPI_INITCONF=y
 CONFIG_WIRELESS_WAPI_STACKSIZE=4096