diff --git a/extlink.install b/extlink.install
index eb7662b..dd8e975 100644
--- a/extlink.install
+++ b/extlink.install
@@ -12,7 +12,20 @@ function extlink_install() {
  * Implements hook_uninstall().
  */
 function extlink_uninstall() {
-  db_query("DELETE FROM {variable} WHERE name LIKE 'extlink_%'");
+  variable_del('extlink_alert');
+  variable_del('extlink_alert_text');
+  variable_del('extlink_class');
+  variable_del('extlink_css_exclude');
+  variable_del('extlink_css_explicit');
+  variable_del('extlink_exclude');
+  variable_del('extlink_img_class');
+  variable_del('extlink_include');
+  variable_del('extlink_label');
+  variable_del('extlink_mailto_class');
+  variable_del('extlink_mailto_label');
+  variable_del('extlink_subdomains');
+  variable_del('extlink_target');
+
   cache_clear_all('variables', 'cache');
 }