diff --git a/configs/ts4600_defconfig b/configs/ts4600_defconfig
index 1d3acd3..40e20c4 100644
--- a/configs/ts4600_defconfig
+++ b/configs/ts4600_defconfig
@@ -16,4 +16,5 @@
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
+CONFIG_MMC_MXS=y
 CONFIG_OF_LIBFDT=y