--- a/simplenews_template.module	2011-12-01 15:15:59.000000000 -0500
+++ b/simplenews_template.module	2011-12-01 15:16:38.000000000 -0500
@@ -247,7 +247,7 @@
   );
 
   // Header input format
-  $form['simplenews_template']['simplenews_template_header']["simplenews_template_header_format_$tid"] = filter_form(_simplenews_template_get_header_format($tid), 1, array("simplenews_template_header_format_$tid"));
+  $form['simplenews_template']['simplenews_template_header']['format'] = filter_form(_simplenews_template_get_header_format($tid), 1, array("simplenews_template_header_format_$tid"));
 }
 
 function _simplenews_template_form_alter_footer(&$form, $tid) {
@@ -269,7 +269,7 @@
   );
 
   // Footer input format
-  $form['simplenews_template']['simplenews_template_footer']["simplenews_template_footer_format_$tid"] = filter_form(_simplenews_template_get_footer_format($tid), 1, array("simplenews_template_footer_format_$tid"));
+  $form['simplenews_template']['simplenews_template_footer']['format'] = filter_form(_simplenews_template_get_footer_format($tid), 1, array("simplenews_template_footer_format_$tid"));
 }
 
 function _simplenews_template_form_alter_style(&$form, $tid) {