diff --git a/configs/ds109_defconfig b/configs/ds109_defconfig
index 16f0585..e9f67ae 100644
--- a/configs/ds109_defconfig
+++ b/configs/ds109_defconfig
@@ -18,3 +18,5 @@
 CONFIG_SPI_FLASH_BAR=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SYS_NS16550=y
+CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y