diff --git a/app/Services/VoucherSetService.php b/app/Services/VoucherSetService.php
index 3e5cac04..d0632b4a 100644
--- a/app/Services/VoucherSetService.php
+++ b/app/Services/VoucherSetService.php
@@ -20,7 +20,7 @@ public static function validateVoucherSetDenominations(VoucherSet $voucherSet):
         $denominationArray = json_decode($voucherSet->denomination_json, true);
 
 
-        if (count($denominationArray) == 0) {
+        if (is_null($denominationArray) || count($denominationArray) == 0) {
             return false;
         }
 
diff --git a/database/factories/VoucherSetFactory.php b/database/factories/VoucherSetFactory.php
index 782bd755..0e039cd3 100644
--- a/database/factories/VoucherSetFactory.php
+++ b/database/factories/VoucherSetFactory.php
@@ -28,6 +28,7 @@ public function definition(): array
             'num_voucher_redemptions'      => $this->faker->numberBetween(1, 10),
             'expires_at'                   => now()->addDays(30),
             'voucher_set_type'             => fake()->randomElement(VoucherSetType::values()),
+            'currency_country_id'          => 14,
         ];
     }
 }