diff --git a/config.h.in b/config.h.in
index 41169bfd3..f8d8143c0 100644
--- a/config.h.in
+++ b/config.h.in
@@ -99,12 +99,6 @@
 /* Define if you have tzset(3).  */
 #undef HAVE_TZSET
 
-/* Define if you have fchdir(3).  */
-#undef HAVE_FCHDIR
-
-/* Define if you have realpath(3).  */
-#undef HAVE_REALPATH
-
 /* Define if you have getcwd(3).  */
 #undef HAVE_GETCWD