diff --git a/core/modules/path/path.install b/core/modules/path/path.install
new file mode 100644
index 0000000..9bb3881
--- /dev/null
+++ b/core/modules/path/path.install
@@ -0,0 +1,17 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the path module.
+ */
+
+/**
+ * Set all alias langcodes to default language on monolingual sites.
+ */
+function path_update_7000() {
+  if (!\Drupal::languageManager()->isMultilingual()) {
+    db_update('url_alias')
+      ->fields(array('langcode' => \Drupal::service('language.default')->get()->getId()))
+      ->execute();
+  }
+}