diff --git a/arch/risc-v/src/mpfs/mpfs_config.h b/arch/risc-v/src/mpfs/mpfs_config.h
index 48020199b6..ce2007d599 100755
--- a/arch/risc-v/src/mpfs/mpfs_config.h
+++ b/arch/risc-v/src/mpfs/mpfs_config.h
@@ -59,6 +59,18 @@
 #  undef CONFIG_UART3_SERIAL_CONSOLE
 #  undef CONFIG_UART4_SERIAL_CONSOLE
 #  define HAVE_SERIAL_CONSOLE 1
+#elif defined(CONFIG_UART3_SERIAL_CONSOLE) && defined(CONFIG_MPFS_UART3)
+#  undef CONFIG_UART0_SERIAL_CONSOLE
+#  undef CONFIG_UART1_SERIAL_CONSOLE
+#  undef CONFIG_UART2_SERIAL_CONSOLE
+#  undef CONFIG_UART4_SERIAL_CONSOLE
+#  define HAVE_SERIAL_CONSOLE 1
+#elif defined(CONFIG_UART4_SERIAL_CONSOLE) && defined(CONFIG_MPFS_UART4)
+#  undef CONFIG_UART0_SERIAL_CONSOLE
+#  undef CONFIG_UART1_SERIAL_CONSOLE
+#  undef CONFIG_UART2_SERIAL_CONSOLE
+#  undef CONFIG_UART3_SERIAL_CONSOLE
+#  define HAVE_SERIAL_CONSOLE 1
 #else
 #  undef CONFIG_UART0_SERIAL_CONSOLE
 #  undef CONFIG_UART1_SERIAL_CONSOLE
diff --git a/arch/risc-v/src/mpfs/mpfs_lowputc.c b/arch/risc-v/src/mpfs/mpfs_lowputc.c
index fc27d074f8..4385b70785 100755
--- a/arch/risc-v/src/mpfs/mpfs_lowputc.c
+++ b/arch/risc-v/src/mpfs/mpfs_lowputc.c
@@ -81,7 +81,7 @@
 #  elif defined(CONFIG_UART4_SERIAL_CONSOLE)
 #    define MPFS_CONSOLE_BASE        MPFS_UART4_BASE
 #    define MPFS_CONSOLE_BAUD        CONFIG_UART4_BAUD
-#    define MPFS_CONSOLE_BITS        CONFIG_UART4BITS
+#    define MPFS_CONSOLE_BITS        CONFIG_UART4_BITS
 #    define MPFS_CONSOLE_PARITY      CONFIG_UART4_PARITY
 #    define MPFS_CONSOLE_2STOP       CONFIG_UART4_2STOP
 #    define MPFS_CONSOLE_CLOCKBIT    SYSREG_SUBBLK_CLOCK_CR_MMUART4