diff --git a/cmd/Kconfig b/cmd/Kconfig
index eff238c..863b7f9 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1309,6 +1309,7 @@
 
 config CMD_USB
 	bool "usb"
+	depends on USB
 	select HAVE_BLOCK_DEVICE
 	help
 	  USB support.