diff --git a/cmd/Kconfig b/cmd/Kconfig
index 676011d..051c1b6 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -929,6 +929,7 @@ config CMD_ROCKUSB
 
 config CMD_USB_MASS_STORAGE
 	bool "UMS usb mass storage"
+	select USB_FUNCTION_MASS_STORAGE
 	help
 	  USB mass storage support