--- a/configure.ac
+++ b/configure.ac
@@ -2741,7 +2741,8 @@ dnl **************************
 dnl *** Checks for gtk-doc ***
 dnl **************************
 
-GTK_DOC_CHECK([1.15])
+AM_CONDITIONAL([ENABLE_GTK_DOC], [false])
+AM_CONDITIONAL([GTK_DOC_USE_LIBTOOL], [false])
 
 AC_ARG_ENABLE(man,
               [AC_HELP_STRING([--enable-man],