--- a/configure.ac
+++ b/configure.ac
@@ -120,7 +120,6 @@
 M17N_EXT_LIBS=
 
 AC_CHECK_PROG(HAVE_PKG_CONFIG, pkg-config, yes)
-AM_CONDITIONAL([HAVE_PKG_CONFIG], [test x$HAVE_PKG_CONFIG = xyes])
 
 if test "x$no_x" != "xyes"; then
   AC_DEFINE(HAVE_X11, 1, [Define to 1 if you have X11.])
@@ -318,6 +317,8 @@
 
 fi
 
+AM_CONDITIONAL([HAVE_PKG_CONFIG], [test x$HAVE_PKG_CONFIG = xyes])
+
 dnl Check for libxml2 usability.
 save_CPPFLAGS="$CPPFLAGS"
 save_LIBS="$LIBS"