--- compat/nedmalloc/malloc.c.h.orig	Fri Apr 18 16:10:39 2014
+++ compat/nedmalloc/malloc.c.h	Fri Apr 18 16:12:29 2014
@@ -1323,7 +1323,7 @@ int mspace_mallopt(int, int);
 #ifndef LACKS_UNISTD_H
 #include <unistd.h>     /* for sbrk, sysconf */
 #else /* LACKS_UNISTD_H */
-#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
+#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__minix)
 extern void*     sbrk(ptrdiff_t);
 #endif /* FreeBSD etc */
 #endif /* LACKS_UNISTD_H */