Index: modules/filter/filter.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/filter/filter.module,v
retrieving revision 1.298
diff -u -p -r1.298 filter.module
--- modules/filter/filter.module	16 Oct 2009 19:06:23 -0000	1.298
+++ modules/filter/filter.module	19 Oct 2009 08:36:37 -0000
@@ -435,7 +435,8 @@ function filter_default_format($account 
   }
   // Get a list of formats for this user, ordered by weight. The first one
   // available is the user's default format.
-  $format = array_shift(filter_formats($account));
+  $formats = filter_formats($account);
+  $format = array_shift($formats);
   return $format->format;
 }