diff --git a/boards/risc-v/fe310/hifive1-revb/configs/nsh/defconfig b/boards/risc-v/fe310/hifive1-revb/configs/nsh/defconfig
index c89b818981..e0c0c48008 100644
--- a/boards/risc-v/fe310/hifive1-revb/configs/nsh/defconfig
+++ b/boards/risc-v/fe310/hifive1-revb/configs/nsh/defconfig
@@ -76,7 +76,7 @@ CONFIG_SYSTEM_NSH=y
 CONFIG_TASK_NAME_SIZE=12
 CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
 CONFIG_TESTING_GETPRIME=y
-CONFIG_UART0_RXBUFSIZE=8
+CONFIG_UART0_RXBUFSIZE=16
 CONFIG_UART0_SERIAL_CONSOLE=y
 CONFIG_UART0_TXBUFSIZE=32
 CONFIG_USERMAIN_STACKSIZE=1536