diff --git a/acinclude.m4 b/acinclude.m4
index d77937b..10e648d 100644
--- a/acinclude.m4
+++ b/acinclude.m4
AM_CONDITIONAL(TOOLS, test "${tools_enable}" = "yes")
AM_CONDITIONAL(BCCMD, test "${bccmd_enable}" = "yes")
AM_CONDITIONAL(PCMCIA, test "${pcmcia_enable}" = "yes")
- AM_CONDITIONAL(HID2HCI, test "${hid2hci_enable}" = "yes" && test "${usb_found}" = "yes")
+ AM_CONDITIONAL(HID2HCI, test "${hid2hci_enable}" = "yes" && test "${usb_found}" = "yes" && test "${udev_found}" = "yes")
AM_CONDITIONAL(DFUTOOL, test "${dfutool_enable}" = "yes" && test "${usb_found}" = "yes")
AM_CONDITIONAL(UDEVRULES, test "${udevrules_enable}" = "yes")
AM_CONDITIONAL(CONFIGFILES, test "${configfiles_enable}" = "yes")