diff --git a/templates/wiki.latex b/templates/wiki.latex
index 606a83c..414a8c5 100644
--- a/templates/wiki.latex
+++ b/templates/wiki.latex
@@ -233,6 +233,9 @@ $endif$
 $if(author-meta)$
   pdfauthor={$author-meta$},
 $endif$
+$if(lang)$
+  pdflang={$lang$},
+$endif$
 $if(subject)$
   pdfsubject={$subject$},
 $endif$