diff --git a/workbench_moderation.module b/workbench_moderation.module
index b652b6f..90ac388 100644
--- a/workbench_moderation.module
+++ b/workbench_moderation.module
@@ -354,9 +354,13 @@ function workbench_moderation_view_tab_title($node) {
  */
 function workbench_moderation_admin_paths() {
   if (variable_get('node_admin_theme')) {
-    $paths = array(
-      'node/*/moderation' => TRUE,
-    );
+    $paths = array();
+    $paths['node/*/moderation'] = TRUE;
+    if (module_exists('diff')) {
+      $paths['node/*/moderation/diff'] = TRUE;
+      $paths['node/*/moderation/diff/list'] = TRUE;
+      $paths['node/*/moderation/diff/view'] = TRUE;
+    }
     return $paths;
   }
 }