Fix typo.

diff --git a/configure.ac b/configure.ac
index ad82765f23fb54a4695c2cd20892f8c9f5082c67..58019334ae219230e6ddbf8c1868e1a7c9054213 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -67,7 +67,7 @@ AC_MSG_RESULT([$with_backend])
 AM_CONDITIONAL([BACKEND_LIBUSB], test x$with_backend = xlibusb)
 AM_CONDITIONAL([BACKEND_OSX], test x$with_backend = xosx)
 
-if test x$with_backend = libusb; then
+if test x$with_backend = xlibusb; then
   AC_LIB_HAVE_LINKFLAGS(usb,, [#include <usb.h>], [usb_init()])
   if test "$ac_cv_libusb" != yes; then
      AC_MSG_ERROR([libusb not found, please install usb.h and libusb.so])