diff --git a/db/migrations/2022_12_06_000000_change_api_key_length.php b/db/migrations/2022_12_06_000000_change_api_key_length.php
index d5e811de..f51bcb74 100644
--- a/db/migrations/2022_12_06_000000_change_api_key_length.php
+++ b/db/migrations/2022_12_06_000000_change_api_key_length.php
@@ -6,6 +6,7 @@ namespace Engelsystem\Migrations;
 
 use Engelsystem\Database\Migration\Migration;
 use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Str;
 
 class ChangeApiKeyLength extends Migration
 {
@@ -24,6 +25,19 @@ class ChangeApiKeyLength extends Migration
      */
     public function down(): void
     {
+        $connection = $this->schema->getConnection();
+        $data = $connection->table('users')->get(['id', 'api_key']);
+        foreach ($data as $user) {
+            if (Str::length($user->api_key) <= 32) {
+                continue;
+            }
+
+            $key = Str::substr($user->api_key, 0, 32);
+            $connection->table('users')
+                ->where('id', $user->id)
+                ->update(['api_key' => $key]);
+        }
+
         $this->schema->table('users', function (Blueprint $table): void {
             $table->string('api_key', 32)->change();
         });