diff --git a/.config/vim/ftplugin/vimwiki.vim b/.config/vim/ftplugin/vimwiki.vim
index 293568b..2c80677 100644
--- a/.config/vim/ftplugin/vimwiki.vim
+++ b/.config/vim/ftplugin/vimwiki.vim
@@ -1,7 +1,8 @@
-" Do not highlight vertical box drawing character as non-ASCII if it used as
-" table separator
-if vimwiki#vars#get_syntaxlocal('rxTableSep') == '│'
-	let w:ignore_non_ascii_chars = '│' .. get(w:, 'ignore_non_ascii_chars', '')
+" Don't highlight Unicode table separator (e.g. vertical box drawing character).
+" See vimrc.d/aesthetics.vim for w:ignore_non_ascii_chars
+if vimwiki#vars#get_syntaxlocal('rxTableSep') !~ '[\d0-\d127]'
+	let w:ignore_non_ascii_chars = vimwiki#vars#get_syntaxlocal('rxTableSep')
+	                             \ .. get(w:, 'ignore_non_ascii_chars', '')
 	" Update after changes
 	call HighlightNonASCIIChars()
 endif