diff --git a/config/config.h.in b/config/config.h.in
index 97f1cfe40e..1cb801d7f9 100644
--- a/config/config.h.in
+++ b/config/config.h.in
@@ -48,7 +48,6 @@
 #define HAVE_PUTENV 1
 #define HAVE_PWD_H 1
 #define HAVE_READLINK 1
-#define HAVE_RENAME 1
 #define HAVE_SELECT 1
 // TODO: add proper cmake check
 // #define HAVE_SELINUX 1
diff --git a/src/os_unix.c b/src/os_unix.c
index 8da7c4701f..69c913e306 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -2370,29 +2370,6 @@ char_u  **file;
   return FALSE;
 }
 
-#ifndef HAVE_RENAME
-/*
- * Scaled-down version of rename(), which is missing in Xenix.
- * This version can only move regular files and will fail if the
- * destination exists.
- */
-int mch_rename(src, dest)
-const char *src, *dest;
-{
-  struct stat st;
-
-  if (stat(dest, &st) >= 0)         /* fail if destination exists */
-    return -1;
-  if (link(src, dest) != 0)         /* link file to new name */
-    return -1;
-  if (mch_remove(src) == 0)         /* delete link to old name */
-    return 0;
-  return -1;
-}
-#endif /* !HAVE_RENAME */
-
-
-
 #if defined(FEAT_LIBCALL) || defined(PROTO)
 typedef char_u * (*STRPROCSTR)(char_u *);
 typedef char_u * (*INTPROCSTR)(int);
diff --git a/src/os_unix_defs.h b/src/os_unix_defs.h
index cb7d888bb1..94ff9ffb68 100644
--- a/src/os_unix_defs.h
+++ b/src/os_unix_defs.h
@@ -253,11 +253,7 @@
 #  define DFLT_MAXMEMTOT        (10*1024)    /* use up to 10 Mbyte for Vim */
 # endif
 
-# ifdef HAVE_RENAME
-#  define mch_rename(src, dst) rename(src, dst)
-# else
-int mch_rename(const char *src, const char *dest);
-# endif
+#define mch_rename(src, dst) rename(src, dst)
 
 #if !defined(S_ISDIR) && defined(S_IFDIR)
 # define        S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)