diff --git a/app/Http/Controllers/WebpayController.php b/app/Http/Controllers/WebpayController.php
index a968736..cd1a79d 100644
--- a/app/Http/Controllers/WebpayController.php
+++ b/app/Http/Controllers/WebpayController.php
@@ -25,7 +25,7 @@ public function create()
 
         $createTx = [
             'buyOrder' => "O-" . rand(1, 10000),
-            "sessionId" => "S-" . (string)(rand(1, 10000)),
+            "sessionId" => "S-" . rand(1, 10000),
             'returnUrl' => url('/') . '/webpay-plus/commit',
             'amount' => rand(1000, 2000)
         ];
diff --git a/app/Http/Controllers/WebpayPlusDeferredController.php b/app/Http/Controllers/WebpayPlusDeferredController.php
index 62ca70d..8586d60 100644
--- a/app/Http/Controllers/WebpayPlusDeferredController.php
+++ b/app/Http/Controllers/WebpayPlusDeferredController.php
@@ -23,7 +23,7 @@ public function create()
 
         $createTx = [
             'buyOrder' => "O-" . rand(1, 10000),
-            "sessionId" => "S-" . (string)(rand(1, 10000)),
+            "sessionId" => "S-" . rand(1, 10000),
             'returnUrl' => url('/') . '/webpay-plus-diferido/commit',
             'amount' => rand(1000, 2000)
         ];
diff --git a/app/Http/Controllers/WebpayPlusMallController.php b/app/Http/Controllers/WebpayPlusMallController.php
index 9256f34..4234d20 100644
--- a/app/Http/Controllers/WebpayPlusMallController.php
+++ b/app/Http/Controllers/WebpayPlusMallController.php
@@ -22,7 +22,7 @@ public function create()
 
         $createTx = [
             "buy_order" => "O-" . rand(1, 10000),
-            "session_id" => "S-" . (string)(rand(1, 10000)),
+            "session_id" => "S-" . rand(1, 10000),
             "return_url" => url("/") . "/webpay-mall/commit",
             "details" => [
                 [
diff --git a/app/Http/Controllers/WebpayPlusMallDeferredController.php b/app/Http/Controllers/WebpayPlusMallDeferredController.php
index ce5f71a..931d160 100644
--- a/app/Http/Controllers/WebpayPlusMallDeferredController.php
+++ b/app/Http/Controllers/WebpayPlusMallDeferredController.php
@@ -22,7 +22,7 @@ public function create()
 
         $createTx = [
             'buy_order' => "O-" . rand(1, 10000),
-            "session_id" => "S-" . (string)(rand(1, 10000)),
+            "session_id" => "S-" . rand(1, 10000),
             'return_url' => url('/') . '/webpay-mall-diferido/commit',
             'details' => [
                 [