diff --git a/configs/mx1ads/ostest/defconfig b/configs/mx1ads/ostest/defconfig
index cca4dc73ec..0437684df1 100644
--- a/configs/mx1ads/ostest/defconfig
+++ b/configs/mx1ads/ostest/defconfig
@@ -89,18 +89,25 @@ CONFIG_ARCH_STACKDUMP=y
 #
 CONFIG_UART0_SERIAL_CONSOLE=y
 CONFIG_UART1_SERIAL_CONSOLE=n
+CONFIG_UART2_SERIAL_CONSOLE=n
 CONFIG_UART0_TXBUFSIZE=256
 CONFIG_UART1_TXBUFSIZE=256
+CONFIG_UART2_TXBUFSIZE=256
 CONFIG_UART0_RXBUFSIZE=256
 CONFIG_UART1_RXBUFSIZE=256
+CONFIG_UART2_RXBUFSIZE=256
 CONFIG_UART0_BAUD=115200
 CONFIG_UART1_BAUD=115200
+CONFIG_UART2_BAUD=115200
 CONFIG_UART0_BITS=8
 CONFIG_UART1_BITS=8
+CONFIG_UART2_BITS=8
 CONFIG_UART0_PARITY=0
 CONFIG_UART1_PARITY=0
+CONFIG_UART2_PARITY=0
 CONFIG_UART0_2STOP=0
 CONFIG_UART1_2STOP=0
+CONFIG_UART2_2STOP=0
 
 #
 # General build options