diff --git a/asset.install b/asset.install
old mode 100644
new mode 100755
index 4d4e862..6a88510
--- a/asset.install
+++ b/asset.install
@@ -59,6 +59,8 @@
     'indexes' => array(
       'asset_type' => array(array('type', 4)),
       'asset_title_type' => array('title', array('type', 4)),
+      'asset_changed' => array('changed'),
+      'asset_created' => array('created'),
     ),
     'foreign keys' => array(
       'uid' => array('users' => 'uid'),
@@ -187,3 +189,12 @@
   }
   return FALSE;
 }
+
+/**
+ * Add indexes for table `asset`.
+ */
+function asset_update_7101() {
+
+  db_add_index('asset', 'asset_changed', array('changed'));
+  db_add_index('asset', 'asset_created', array('created'));
+}