DEPENDS:=@USB_SUPPORT does not pass test for dependency on usbcore.ko

I'm adding a kernel module.

Adding this line:
DEPENDS:=@USB_SUPPORT
causes this error from automated tests:
Package kmod-dvb-usb-v2 is missing dependencies for the following libraries: usbcore.ko
while this line:
DEPENDS:=kmod-usb-core
does not.

Is this a bug?
Thanks.