diff --git a/boards/arm/samv7/samv71-xult/configs/knsh/defconfig b/boards/arm/samv7/samv71-xult/configs/knsh/defconfig
index 09ff632b83..39c2076330 100644
--- a/boards/arm/samv7/samv71-xult/configs/knsh/defconfig
+++ b/boards/arm/samv7/samv71-xult/configs/knsh/defconfig
@@ -82,4 +82,4 @@ CONFIG_SYSTEM_I2CTOOL=y
 CONFIG_SYSTEM_NSH=y
 CONFIG_SYSTEM_RAMTEST=y
 CONFIG_SYS_RESERVED=8
-CONFIG_UART3_SERIAL_CONSOLE=y
+CONFIG_USART1_SERIAL_CONSOLE=y
diff --git a/boards/risc-v/mpfs/icicle/configs/knsh/defconfig b/boards/risc-v/mpfs/icicle/configs/knsh/defconfig
index dadf67d785..b2e691059a 100644
--- a/boards/risc-v/mpfs/icicle/configs/knsh/defconfig
+++ b/boards/risc-v/mpfs/icicle/configs/knsh/defconfig
@@ -74,7 +74,7 @@ CONFIG_SYSTEM_CLE_CMD_HISTORY=y
 CONFIG_SYSTEM_COLOR_CLE=y
 CONFIG_SYSTEM_NSH=y
 CONFIG_SYSTEM_TIME64=y
-CONFIG_SYS_RESERVED=9
+CONFIG_SYS_RESERVED=8
 CONFIG_TASK_NAME_SIZE=20
 CONFIG_TESTING_GETPRIME=y
 CONFIG_TESTING_OSTEST=y