diff --git a/database/migrations/2020_08_28_193013_create_link_codes_table.php b/database/migrations/2020_08_28_193013_create_link_codes_table.php
index a5c89d8..0892bbb 100644
--- a/database/migrations/2020_08_28_193013_create_link_codes_table.php
+++ b/database/migrations/2020_08_28_193013_create_link_codes_table.php
@@ -15,7 +15,7 @@ class CreateLinkCodesTable extends Migration
     {
         Schema::create('link_codes', function (Blueprint $table) {
             $table->id();
-            $table->bigInteger('lodestoneId');
+            $table->bigInteger('lodestoneId')->unique();
             $table->bigInteger('discordUserId')->nullable();
             $table->bigInteger('websiteUserId')->nullable();
             $table->dateTime('expires');