diff --git a/configs/zmx25_defconfig b/configs/zmx25_defconfig
index 54e8dde..7a93903 100644
--- a/configs/zmx25_defconfig
+++ b/configs/zmx25_defconfig
@@ -18,4 +18,5 @@
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y