diff --git a/modules/system/system.install b/modules/system/system.install
index 1161d6c..4c60ae8 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -3025,6 +3025,26 @@ function system_update_7074() {
 }
 
 /**
+ * Convert menu_links query strings into arrays.
+ */
+function system_update_7075() {
+  $query = db_select('menu_links', 'ml', array('fetch' => PDO::FETCH_ASSOC))
+    ->fields('ml', array('mlid', 'options'));
+  foreach ($query->execute() as $menu_link) {
+    $menu_link['options'] = unserialize($menu_link['options']);
+    if (isset($menu_link['options']['query']) && is_string($menu_link['options']['query'])) {
+      $menu_link['options']['query'] = drupal_get_query_array($menu_link['options']['query']);
+      db_update('menu_links')
+        ->fields(array(
+          'options' => serialize($menu_link['options']),
+        ))
+        ->condition('mlid', $menu_link['mlid'], '=')
+        ->execute();
+    }
+  }
+}
+
+/**
  * @} End of "defgroup updates-7.x-extra".
  * The next series of updates should start at 8000.
  */