--- similarterms-head.module	2007-09-07 16:40:10.000000000 -0500
+++ similarterms.module	2007-10-23 14:48:44.000000000 -0500
@@ -40,11 +40,11 @@ function similarterms_block($op = 'list'
   else if ($op == 'view') {
     if ($delta == 0) {
       $block['subject'] = t('Similar');
-      $block['content'] = theme_similarterms(similarterms_list());
+      $block['content'] = theme( 'similarterms', similarterms_list());
     }
     else {
       $block['subject'] = t('Similar');
-      $block['content'] = theme_similarterms(similarterms_list($delta));
+      $block['content'] = theme( 'similarterms', similarterms_list($delta));
     }
     return $block;
   }