diff --git a/autoload/vimwiki/html.vim b/autoload/vimwiki/html.vim
index 43b90cb..075ab1f 100644
--- a/autoload/vimwiki/html.vim
+++ b/autoload/vimwiki/html.vim
@@ -1394,7 +1394,8 @@ function! vimwiki#html#CustomWiki2HTML(path, wikifile, force) "{{{
       \ (len(vimwiki#vars#get_wikilocal('template_path')) > 1 ? shellescape(expand(vimwiki#vars#get_wikilocal('template_path'))) : '-'). ' '.
       \ (len(vimwiki#vars#get_wikilocal('template_default')) > 0 ? vimwiki#vars#get_wikilocal('template_default') : '-'). ' '.
       \ (len(vimwiki#vars#get_wikilocal('template_ext')) > 0 ? vimwiki#vars#get_wikilocal('template_ext') : '-'). ' '.
-      \ (len(vimwiki#vars#get_bufferlocal('subdir'))           > 0 ? shellescape(s:root_path(vimwiki#vars#get_bufferlocal('subdir')))   : '-'))
+      \ (len(vimwiki#vars#get_bufferlocal('subdir')) > 0 ? shellescape(s:root_path(vimwiki#vars#get_bufferlocal('subdir'))) : '-'). ' '.
+      \ (len(vimwiki#vars#get_global('custom_wiki2html_args')) > 0 ? vimwiki#vars#get_global('custom_wiki2html_args') : '-'))
 endfunction " }}}
 
 function! s:convert_file(path_html, wikifile) "{{{
diff --git a/doc/vimwiki.txt b/doc/vimwiki.txt
index 551d2e8..2cc2c4e 100644
--- a/doc/vimwiki.txt
+++ b/doc/vimwiki.txt
@@ -2157,8 +2157,12 @@ The following arguments, in this order, are passed to the script:
 10. root_path : a count of ../ for pages buried in subdirs
     For example, if you have wikilink [[dir1/dir2/dir3/my page in a subdir]]
     then this argument is '../../../'.
+11. custom_args : custom arguments that will be passed to the conversion
+    (can be defined in g:vimwiki_list as 'custom_wiki2html_args' parameter,
+    see |vimwiki-option-custom_wiki2html_args|)
+    script.
 
-Options 7-10 are experimental and may change in the future.  If any of these
+Options 7-11 are experimental and may change in the future.  If any of these
 parameters is empty, a hyphen "-" is passed to the script in its place.
 
 For an example and further instructions, refer to the following script:
@@ -2171,6 +2175,17 @@ be located at https://github.com/vimwiki-backup/vimwiki/issues/384
 To use the internal wiki2html converter, use an empty string (the default).
 
 
+vimwiki-option-custom_wiki2html_args
+-----------------------------------------------------------------------------
+Key                     Default value~
+custom_wiki2html_args   ''
+
+Description
+If a custom script is called with |vimwiki-option-custom_wiki2html|, additional
+parameters can be passed by setting them using 'custom_wiki2html_args' in
+|g:vimwiki_list|.
+
+
 *vimwiki-option-list_margin*
 ------------------------------------------------------------------------------
 Key               Default value~