diff --git a/src/Services/PayPal.php b/src/Services/PayPal.php
index 92559786..ddc72c03 100644
--- a/src/Services/PayPal.php
+++ b/src/Services/PayPal.php
@@ -38,17 +38,11 @@ public function __construct(array $config = [])
     protected function setOptions(array $credentials): void
     {
         // Setting API Endpoints
-        $this->config['api_url'] = 'https://api-m.paypal.com';
+        $sandbox = ($this->mode === 'sandbox') ? '.sandbox' : '';
+        $this->config['api_url'] = "https://api-m{$sandbox}.paypal.com";
 
-        $this->config['gateway_url'] = 'https://www.paypal.com';
-        $this->config['ipn_url'] = 'https://ipnpb.paypal.com/cgi-bin/webscr';
-
-        if ($this->mode === 'sandbox') {
-            $this->config['api_url'] = 'https://api-m.sandbox.paypal.com';
-
-            $this->config['gateway_url'] = 'https://www.sandbox.paypal.com';
-            $this->config['ipn_url'] = 'https://ipnpb.sandbox.paypal.com/cgi-bin/webscr';
-        }
+        $this->config['gateway_url'] = "https://www{$sandbox}.paypal.com";
+        $this->config['ipn_url'] = "https://ipnpb{$sandbox}.paypal.com/cgi-bin/webscr";
 
         // Adding params outside sandbox / live array
         $this->config['payment_action'] = $credentials['payment_action'];
diff --git a/src/Traits/PayPalAPI.php b/src/Traits/PayPalAPI.php
index 9de4d958..a1c40429 100644
--- a/src/Traits/PayPalAPI.php
+++ b/src/Traits/PayPalAPI.php
@@ -129,7 +129,7 @@ public function setCurrentPage(int $page): PayPalClient
      */
     public function showTotals(bool $totals): PayPalClient
     {
-        $this->show_totals = $totals ? "true" : "false";
+        $this->show_totals = $totals ? 'true' : 'false';
 
         return $this;
     }