--- /tmp/acinclude.m4	2009-04-12 10:32:15.000000000 +0200
+++ openobex-1.5/acinclude.m4	2009-04-12 10:32:38.000000000 +0200
@@ -158,7 +158,7 @@
 		;;
 	*)
 		PKG_CHECK_MODULES(USB, libusb, usb_lib_found=yes, AC_MSG_RESULT(no))
-		AC_CHECK_FILE(${prefix}/lib/pkgconfig/libusb.pc, REQUIRES="libusb")
+		REQUIRES="libusb"
 		;;
 	esac
 	AC_SUBST(USB_CFLAGS)