diff --git a/.config/vim/ftplugin/vimwiki.vim b/.config/vim/ftplugin/vimwiki.vim
new file mode 100644
index 0000000..293568b
--- /dev/null
+++ b/.config/vim/ftplugin/vimwiki.vim
@@ -0,0 +1,7 @@
+" 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', '')
+	" Update after changes
+	call HighlightNonASCIIChars()
+endif
diff --git a/.config/vim/vimrc.d/20-plugins.vim b/.config/vim/vimrc.d/20-plugins.vim
index f01a576..c534f6a 100644
--- a/.config/vim/vimrc.d/20-plugins.vim
+++ b/.config/vim/vimrc.d/20-plugins.vim
@@ -32,6 +32,6 @@ if (exists("g:loaded_tmux_navigator"))
 endif
 
 if (get(g:, 'loaded_vimwiki'))
-	" Use vertical box drawing character as separator
+	" Use vertical box drawing character as table separator
 	call vimwiki#vars#set_syntaxlocal('rxTableSep', '│')
 endif