Index: joomla.module
===================================================================
--- joomla.module	(revision 13)
+++ joomla.module	(working copy)
@@ -281,7 +281,7 @@
     '#default_value' => variable_get('joomla_default_blog_nodetype', JOOMLA_DEFAULT_BLOG_NODETYPE),
   );
 
-  $form['joomla_settings_content']['joomla_input_format'] = filter_form(variable_get('joomla_input_format', JOOMLA_INPUT_FORMAT));
+  $form['joomla_settings_content']['joomla_input_format'] = filter_form(variable_get('joomla_input_format', JOOMLA_INPUT_FORMAT), NULL, array('joomla_input_format'));
   $form['joomla_settings_content']['joomla_input_format']['#collapsed'] = 0;
   $form['joomla_settings_content']['joomla_input_format']['#description'] = t('The filter format selected below will be applied to all imported content.');