diff --git a/src/Gateways/MercadoPago/Charges.php b/src/Gateways/MercadoPago/Charges.php
index 4615e8e..ab1a020 100644
--- a/src/Gateways/MercadoPago/Charges.php
+++ b/src/Gateways/MercadoPago/Charges.php
@@ -155,7 +155,7 @@ protected function addCustomer(array $params, array $options)
     protected function addAdditionData(array $params, array $options)
     {
         if (array_key_exists('application', $options)) {
-            $params['sponsor_id'] = $options['application'];
+            $params['sponsor_id'] = (int) $options['application'];
         }
 
         if (array_key_exists('notify_url', $options)) {
diff --git a/src/Gateways/MercadoPagoBasic/Charges.php b/src/Gateways/MercadoPagoBasic/Charges.php
index b54dc10..a2b090c 100644
--- a/src/Gateways/MercadoPagoBasic/Charges.php
+++ b/src/Gateways/MercadoPagoBasic/Charges.php
@@ -184,7 +184,7 @@ protected function addCustomer(array $params, array $options)
     protected function addAdditionData(array $params, array $options)
     {
         if (array_key_exists('application', $options)) {
-            $params['sponsor_id'] = $options['application'];
+            $params['sponsor_id'] = (int) $options['application'];
         }
 
         if (array_key_exists('notify_url', $options)) {