diff --git a/database/migrations/2020_08_28_193017_create_user_links_table.php b/database/migrations/2020_08_28_193017_create_user_links_table.php
index b8293b3..5702009 100644
--- a/database/migrations/2020_08_28_193017_create_user_links_table.php
+++ b/database/migrations/2020_08_28_193017_create_user_links_table.php
@@ -16,10 +16,12 @@ class CreateUserLinksTable extends Migration
         Schema::create('user_links', function (Blueprint $table) {
             $table->id();
             $table->foreignId('freeCompanyLinkId')->constrained('free_company_links');
-            $table->bigInteger('lodestoneId')->nullable();
-            $table->bigInteger('discordUserId')->nullable();
+            $table->bigInteger('lodestoneId')->unique();
+            $table->bigInteger('discordUserId')->nullable()->unique();
             $table->bigInteger('websiteUserId')->nullable();
             $table->timestamps();
+
+            $table->unique(['freeCompanyLinkId', 'websiteUserId']);
         });
     }