diff --git a/build-aux/configure-lib.sh b/build-aux/configure-lib.sh
index 1dfe84fd..1dd7f0e5 100644
--- a/build-aux/configure-lib.sh
+++ b/build-aux/configure-lib.sh
@@ -263,6 +263,7 @@ lib/stub/ctime.c
 lib/stub/fpurge.c
 lib/stub/freadahead.c
 lib/stub/frexp.c
+lib/stub/fscanf.c
 lib/stub/getlogin.c
 lib/stub/getpwnam.c
 lib/stub/getpwuid.c
@@ -270,6 +271,7 @@ lib/stub/gmtime.c
 lib/stub/pclose.c
 lib/stub/popen.c
 lib/stub/rand.c
+lib/stub/rewind.c
 lib/stub/setbuf.c
 lib/stub/setlocale.c
 lib/stub/setvbuf.c
diff --git a/lib/stdio/freeopen.c b/lib/stdio/freeopen.c
deleted file mode 100644
index f9447a09..00000000
--- a/lib/stdio/freeopen.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/* -*-comment-start: "//";comment-end:""-*-
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or (at
- * your option) any later version.
- *
- * GNU Mes is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-
-FILE *
-freopen (char const *file_name, char const *opentype, FILE * stream)
-{
-  fclose (stream);
-  return fopen (file_name, opentype);
-}