diff --git a/configs/skp16c26/ostest/defconfig b/configs/skp16c26/ostest/defconfig
index bc3dc1db7fe..ae17228c213 100644
--- a/configs/skp16c26/ostest/defconfig
+++ b/configs/skp16c26/ostest/defconfig
@@ -90,10 +90,10 @@ CONFIG_ARCH_STACKDUMP=y
 # CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
 # CONFIG_UARTn_2STOP - Two stop bits
 #
-CONFIG_UART0_DISABLE=n
+CONFIG_UART0_DISABLE=y
 CONFIG_UART1_DISABLE=y
 CONFIG_UART2_DISABLE=y
-CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_UART0_SERIAL_CONSOLE=n
 CONFIG_UART1_SERIAL_CONSOLE=n
 CONFIG_UART2_SERIAL_CONSOLE=n
 CONFIG_UART0_TXBUFSIZE=64
@@ -177,7 +177,7 @@ CONFIG_SCHED_INSTRUMENTATION=n
 CONFIG_TASK_NAME_SIZE=0
 CONFIG_START_YEAR=2009
 CONFIG_START_MONTH=2
-CONFIG_START_DAY=8
+CONFIG_START_DAY=17
 CONFIG_JULIAN_TIME=n
 CONFIG_DEV_CONSOLE=y
 CONFIG_DEV_LOWCONSOLE=n