diff --git a/src/calibre/library/server/browse.py b/src/calibre/library/server/browse.py
index 5b7d732820..6de6fad726 100644
--- a/src/calibre/library/server/browse.py
+++ b/src/calibre/library/server/browse.py
@@ -669,10 +669,15 @@ class BrowseServer(object):
         args = {'id':id_, 'mi':mi,
                 }
         ccache = self.categories_cache() if add_category_links else {}
+        ftitle = fauthors = ''
         for key in mi.all_field_keys():
             val = mi.format_field(key)[1]
             if not val:
                 val = ''
+            if key == 'title':
+                ftitle = xml(val, True)
+            elif key == 'authors':
+                fauthors = xml(val, True)
             if add_category_links:
                 added_key = False
                 fm = mi.metadata_for_field(key)
@@ -710,8 +715,8 @@ class BrowseServer(object):
                     args[key] = xml(val, True)
             else:
                 args[key] = xml(val, True)
-        fname = quote(ascii_filename(args['title']) + ' - ' +
-                ascii_filename(args['authors']))
+        fname = quote(ascii_filename(ftitle) + ' - ' +
+                ascii_filename(fauthors))
         return args, fmt, fmts, fname
 
     @Endpoint(mimetype='application/json; charset=utf-8')