diff --git a/syntax/vimwiki_default.vim b/syntax/vimwiki_default.vim
index fc22f66..dcc401c 100644
--- a/syntax/vimwiki_default.vim
+++ b/syntax/vimwiki_default.vim
@@ -92,5 +92,5 @@ let g:vimwiki_rxMathStart = '{{\$'
 let g:vimwiki_rxMathEnd = '}}\$'
 
 let g:vimwiki_rxComment = '^\s*%%.*$'
-let g:vimwiki_rxTags = '\(^\|\s\)\zs:\([^:[:space:]]\+:\)\+\ze\(\s\|$\)'
+let g:vimwiki_rxTags = '\%(^\|\s\)\@<=:\%([^:[:space:]]\+:\)\+\%(\s\|$\)\@='
 " see also g:vimwiki_default_tag_search