--- diff/diff.module	2010-09-09 16:33:03.000000000 -0400
+++ diff/diff.module	2010-09-13 11:56:12.918664013 -0400
@@ -53,10 +53,10 @@ function diff_menu() {
     'access arguments' => array(1),
     'file' => 'diff.pages.inc',
   );
-  $items['node/%node/revisions/view/%/%'] = array(
+  $items['node/%node/revisions/view/%/%/%'] = array(
     'title' => 'Diff',
     'page callback' => 'diff_diffs_show',
-    'page arguments' => array(1, 4, 5),
+    'page arguments' => array(1, 4, 5, 6),
     'type' => MENU_LOCAL_TASK,
     'access callback' => 'diff_node_revision_access',
     'access arguments' => array(1),