diff --git a/uninstall.php b/uninstall.php
index 068bbeb3..f1c75deb 100644
--- a/uninstall.php
+++ b/uninstall.php
@@ -29,4 +29,6 @@
 }
 
 delete_option( FacebookPluginConfig::SETTINGS_KEY );
+delete_option( FacebookPluginConfig::OLD_SETTINGS_KEY );
+
 delete_user_meta( get_current_user_id(), FacebookPluginConfig::ADMIN_IGNORE_PIXEL_ID_NOTICE );