diff --git a/runtime/compiler/pyunit.vim b/runtime/compiler/pyunit.vim
index 2a4ea92..2368346 100644
--- a/runtime/compiler/pyunit.vim
+++ b/runtime/compiler/pyunit.vim
@@ -2,15 +2,12 @@
 " Compiler:	Unit testing tool for Python
 " Maintainer:	Max Ischenko <mfi@ukr.net>
 " Last Change: 2004 Mar 27
+"		2024 Apr 03 by The Vim Project (removed :CompilerSet definition)
 
 if exists("current_compiler")
   finish
 endif
 let current_compiler = "pyunit"
 
-if exists(":CompilerSet") != 2		" older Vim always used :setlocal
-  command -nargs=* CompilerSet setlocal <args>
-endif
-
 CompilerSet efm=%C\ %.%#,%A\ \ File\ \"%f\"\\,\ line\ %l%.%#,%Z%[%^\ ]%\\@=%m