diff --git a/islandora_xmlsitemap.install b/islandora_xmlsitemap.install
new file mode 100644
index 0000000..996a842
--- /dev/null
+++ b/islandora_xmlsitemap.install
@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @file
+ * This file contains all install related hooks.
+ */
+
+/**
+ * Implements hook_uninstall().
+ */
+function islandora_xmlsitemap_uninstall() {
+  $variables = array(
+    'islandora_xmlsitemap_number_of_pids_to_process',
+    'islandora_xmlsitemap_last_modified_value',
+    'islandora_xmlsitemap_last_modified_field',
+    'islandora_namespace_restriction_enforced',
+  );
+  array_walk($variables, 'variable_del');
+}