diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 302eeb4..d07c5e2 100644
--- a/runtime/syntax/generator/vim.vim.base
+++ b/runtime/syntax/generator/vim.vim.base
@@ -203,7 +203,7 @@
 
 " All vimCommands are contained by vimIsCommand. {{{2
 syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutoCmd,vimAugroup,vimBehave,vimCall,vimCatch,vimConst,vimDef,vimDefFold,vimDelcommand,@vimEcho,vimEnddef,vimEndfunction,vimExecute,vimIsCommand,vimExtCmd,vimFor,vimFunction,vimFuncFold,vimGlobal,vimHighlight,vimLet,vimLoadkeymap,vimMap,vimMark,vimMatch,vimNotFunc,vimNormal,vimSet,vimSleep,vimSyntax,vimThrow,vimUnlet,vimUnmap,vimUserCmd,vimMenu,vimMenutranslate,@vim9CmdList
-syn cluster vim9CmdList	contains=vim9Class,vim9Const,vim9Enum,vim9Export,vim9Final,vim9For,vim9Interface,vim9Type,vim9Var
+syn cluster vim9CmdList	contains=vim9Abstract,vim9Class,vim9Const,vim9Enum,vim9Export,vim9Final,vim9For,vim9Interface,vim9Type,vim9Var
 syn match vimCmdSep	"[:|]\+"	skipwhite nextgroup=@vimCmdList,vimSubst1
 syn match vimIsCommand	"\<\%(\h\w*\|[23]mat\%[ch]\)\>"	contains=vimCommand
 syn match vimBang	      contained	"!"