diff --git a/tabellio/pfbviews/document.py b/tabellio/pfbviews/document.py
index 7d93488..1338e63 100644
--- a/tabellio/pfbviews/document.py
+++ b/tabellio/pfbviews/document.py
@@ -5,7 +5,7 @@ class View(BrowserView):
         if not self.context.related_docs:
             return []
         objects = [x.to_object for x in self.context.related_docs]
-        return sorted(objects, lambda x,y: cmp(x.reftitle, y.reftitle))
+        return sorted(objects, lambda x,y: cmp(x.title, y.title))
 
 class DocumentDownload(BrowserView):
     def __call__(self):