diff --git a/database/migrations/2024_11_30_075826_multi_piggy.php b/database/migrations/2024_11_30_075826_multi_piggy.php
index 2018252dc8..fb47184a6b 100644
--- a/database/migrations/2024_11_30_075826_multi_piggy.php
+++ b/database/migrations/2024_11_30_075826_multi_piggy.php
@@ -23,7 +23,8 @@ return new class () extends Migration {
         });
         Schema::table('piggy_banks', static function (Blueprint $table): void {
             // 3. add currency
-            $table->integer('transaction_currency_id', false, true)->after('account_id');
+
+            $table->integer('transaction_currency_id', false, true)->after('account_id')->nullable();
             $table->foreign('transaction_currency_id', 'unique_currency')->references('id')->on('transaction_currencies')->onDelete('cascade');
         });
         Schema::table('piggy_banks', static function (Blueprint $table): void {