diff --git a/web/app/Lib/EnsureBilling.php b/web/app/Lib/EnsureBilling.php
index 7a6568ca..ea67df20 100644
--- a/web/app/Lib/EnsureBilling.php
+++ b/web/app/Lib/EnsureBilling.php
@@ -148,7 +148,7 @@ private static function requestRecurringPayment(Session $session, array $config,
                     ],
                     "returnUrl" => $returnUrl,
                     "test" => !self::isProd(),
-                    "trialDays": $config["trialDays"],                    
+                    "trialDays" => $config["trialDays"],                    
                 ],
             ]
         );