diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 0f8ab0a..9ab923c 100644
--- a/runtime/syntax/generator/vim.vim.base
+++ b/runtime/syntax/generator/vim.vim.base
@@ -3,7 +3,7 @@
 " Maintainer:	   Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "	   Doug Kearns <dougkearns@gmail.com>
 " URL:	   https://github.com/vim-jp/syntax-vim-ex
-" Last Change:	   2024 Mar 31
+" Last Change:	   2024 Apr 09
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -277,8 +277,8 @@
 
 if exists("g:vimsyn_folding") && g:vimsyn_folding =~# 'f'
  syn region	vimFuncFold	start="\<fu\%[nction]\>!\=\s*\%(<[sS][iI][dD]>\|[sg]:\)\=\%(\i\|[#.]\|{.\{-1,}}\)\+\s*("	end="\<endf\%[unction]\>" contains=vimFunction fold keepend transparent
- syn region	vimFuncFold	start="\<def\>!\=\s*\%(<[sS][iI][dD]>\|[sg]:\)\=\%(\i\|[#.]\|{.\{-1,}}\)\+("	end="\<enddef\>"	        contains=vimDef      fold keepend transparent
- syn region	vimFuncFold	start="\<def\s\+new\%(\i\|{.\{-1,}}\)\+("			end="\<enddef\>"	        contains=vimDef      fold keepend transparent
+ syn region	vimFuncFold	start="\<def\>!\=\s*\%(<[sS][iI][dD]>\|[sg]:\)\=\%(\i\|[#.]\)\+("		end="\<enddef\>"	        contains=vimDef      fold keepend transparent
+ syn region	vimFuncFold	start="\<def\s\+new\i\+("				end="\<enddef\>"	        contains=vimDef      fold keepend transparent
 endif
 
 syn match	vimFuncVar   contained	"a:\%(\K\k*\|\d\+\)\>"