diff --git a/configs/riotboard_defconfig b/configs/riotboard_defconfig
index a9191ad..e3d16df 100644
--- a/configs/riotboard_defconfig
+++ b/configs/riotboard_defconfig
@@ -23,6 +23,8 @@
 CONFIG_DM=y
 CONFIG_FSL_ESDHC=y
 CONFIG_SPI_FLASH=y
+CONFIG_SF_DEFAULT_MODE=0
+CONFIG_SF_DEFAULT_SPEED=20000000
 CONFIG_SPI_FLASH_SST=y
 CONFIG_PHYLIB=y
 CONFIG_MII=y