diff --git a/src/Core/Billing/Services/Implementations/PremiumUserBillingService.cs b/src/Core/Billing/Services/Implementations/PremiumUserBillingService.cs
index 57be92ba94..c00a151aa1 100644
--- a/src/Core/Billing/Services/Implementations/PremiumUserBillingService.cs
+++ b/src/Core/Billing/Services/Implementations/PremiumUserBillingService.cs
@@ -32,7 +32,7 @@ public class PremiumUserBillingService(
         var customer = await subscriberService.GetCustomer(user);
 
         // Negative credit represents a balance and all Stripe denomination is in cents.
-        var credit = (long)amount * -100;
+        var credit = (long)(amount * -100);
 
         if (customer == null)
         {