diff --git a/configs/turris_omnia_defconfig b/configs/turris_omnia_defconfig
index 57ab384..ec22946 100644
--- a/configs/turris_omnia_defconfig
+++ b/configs/turris_omnia_defconfig
@@ -56,7 +56,7 @@
 # CONFIG_SPL_PARTITION_UUIDS is not set
 CONFIG_ENV_OVERWRITE=y
 CONFIG_USE_ENV_SPI_MAX_HZ=y
-CONFIG_ENV_SPI_MAX_HZ=50000000
+CONFIG_ENV_SPI_MAX_HZ=40000000
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SPL_OF_TRANSLATE=y
 CONFIG_AHCI_PCI=y
@@ -67,6 +67,8 @@
 CONFIG_MMC_SDHCI_MV=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SF_DEFAULT_MODE=0x0
+CONFIG_SF_DEFAULT_SPEED=40000000
 CONFIG_PHY_MARVELL=y
 CONFIG_PHY_GIGE=y
 CONFIG_MVNETA=y