diff --git a/configs/defconfig.common b/configs/defconfig.common
index 763504066..ffc8911d3 100644
--- a/configs/defconfig.common
+++ b/configs/defconfig.common
@@ -32,6 +32,8 @@ CONFIG_ETH_SPI_ETHERNET_DM9051=y
 CONFIG_ETH_SPI_ETHERNET_W5500=y
 CONFIG_FATFS_CODEPAGE_850=y
 CONFIG_FATFS_LFN_STACK=y
+# CONFIG_FATFS_API_ENCODING_ANSI_OEM is not set
+CONFIG_FATFS_API_ENCODING_UTF_8=y
 # CONFIG_FMB_CONTROLLER_SLAVE_ID_SUPPORT is not set
 CONFIG_FMB_TIMER_PORT_ENABLED=y
 CONFIG_FREERTOS_HZ=1000