diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
index ba2c57b687124c4f649b156deb66082de6d66e4f..dcbb44c4ea805ad4b595a60bc69723105ce32390 100644
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -1694,7 +1694,7 @@ BEGIN
     RETURN;
 END
 $BODY$
-LANGUAGE 'plpgsql' ;
+LANGUAGE plpgsql;
 
 SELECT * FROM getallfoo();
 </programlisting>