diff --git a/debian/changelog b/debian/changelog
index a984aa4f2..1b0fd18ff 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -18,6 +18,8 @@ ikiwiki (3.20130904.2) UNRELEASED; urgency=low
     corrupt themselves, which happens all too frequently).
   * osm: Remove invalid use of charset on embedded javascript tags.
     Closes: #731197
+  * style.css: Add compatability definitions for more block-level
+    html5 elements. Closes: #731199
 
  -- Joey Hess <joeyh@debian.org>  Thu, 05 Sep 2013 10:01:10 -0400
 
diff --git a/doc/style.css b/doc/style.css
index 067a3bf7a..4c48e5c7b 100644
--- a/doc/style.css
+++ b/doc/style.css
@@ -5,10 +5,8 @@
  */
 
 /* html5 compat */
-article,
-header,
-footer,
-nav {
+article,aside,details,figcaption,figure,
+footer,header,hgroup,menu,nav,section {
 	display: block;
 }