diff --git a/build-aux/configure-lib.sh b/build-aux/configure-lib.sh
index 0c122b50..2d9ab1fb 100644
--- a/build-aux/configure-lib.sh
+++ b/build-aux/configure-lib.sh
@@ -1,7 +1,7 @@
 #! /bin/sh
 
 # GNU Mes --- Maxwell Equations of Software
-# Copyright © 2019, 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2019,2020,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@@ -155,7 +155,6 @@ lib/stdio/putc.c
 lib/stdio/putchar.c
 lib/stdio/ungetc.c
 lib/stdlib/free.c
-lib/stdlib/malloc.c
 lib/stdlib/realloc.c
 lib/string/memchr.c
 lib/string/memcmp.c
@@ -209,6 +208,7 @@ lib/linux/_getcwd.c
 lib/linux/gettimeofday.c
 lib/linux/ioctl.c
 lib/linux/_open3.c
+lib/linux/malloc.c
 lib/linux/_read.c
 lib/linux/time.c
 lib/linux/unlink.c
diff --git a/lib/stdlib/malloc.c b/lib/linux/malloc.c
similarity index 74%
rename from lib/stdlib/malloc.c
rename to lib/linux/malloc.c
index 54f89af4..42914440 100644
--- a/lib/stdlib/malloc.c
+++ b/lib/linux/malloc.c
@@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
  * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
  * Copyright © 2021 Danny Milosavljevic <dannym@scratchpost.org>
  *
  * This file is part of GNU Mes.
@@ -24,15 +24,6 @@
 #include <stddef.h>
 #include <stdint.h>
 
-/* FIXME: We want bin/mes-mescc's x86-linux sha256sum to stay the same.
-   Therfore we cannot remove stdlib/malloc from libc_SOURCES, which is
-   what GNU suggests.
-
-   move stdlib/malloc.c to unix/malloc.c and move it from shared
-   libc_SOURCES to linux-specific list when the checksum of mes.c
-   changes. */
-
-#if !__GNU__
 char *__brk = 0;
 
 void *
@@ -49,4 +40,3 @@ malloc (size_t size)
   __brk += size;
   return p;
 }
-#endif /* !__GNU__ */