diff --git a/runtime/compiler/xbuild.vim b/runtime/compiler/xbuild.vim
index b508a46..42c7c65 100644
--- a/runtime/compiler/xbuild.vim
+++ b/runtime/compiler/xbuild.vim
@@ -2,6 +2,7 @@
 " Compiler:	Mono C#
 " Maintainer:	Chiel ten Brinke (ctje92@gmail.com)
 " Last Change:	2013 May 13
+"		2024 Apr 03 by The Vim Project (removed :CompilerSet definition)
 
 if exists("current_compiler")
   finish
@@ -11,10 +12,6 @@
 let s:keepcpo= &cpo
 set cpo&vim
 
-if exists(":CompilerSet") != 2		" older Vim always used :setlocal
-  command -nargs=* CompilerSet setlocal <args>
-endif
-
 CompilerSet errorformat=\ %#%f(%l\\\,%c):\ %m
 CompilerSet makeprg=xbuild\ /nologo\ /v:q\ /property:GenerateFullPaths=true