diff --git a/src/Aspire.Hosting.Azure.AppContainers/ContainerAppExtensions.cs b/src/Aspire.Hosting.Azure.AppContainers/ContainerAppExtensions.cs
index 506dd1be32e..b3107e024ca 100644
--- a/src/Aspire.Hosting.Azure.AppContainers/ContainerAppExtensions.cs
+++ b/src/Aspire.Hosting.Azure.AppContainers/ContainerAppExtensions.cs
@@ -90,14 +90,12 @@ public static void AddCustomDomain(this ContainerApp app, IResourceBuilder<Param
             new NullLiteralExpression()
             );
 
-        app.Configuration.Ingress.CustomDomains = new BicepList<ContainerAppCustomDomain>()
-           {
-                new ContainerAppCustomDomain()
-                {
-                    BindingType = bindingTypeConditional,
-                    Name = customDomainParameter,
-                    CertificateId = certificateOrEmpty
-                }
-           };
+        app.Configuration.Ingress.CustomDomains.Add(
+            new ContainerAppCustomDomain()
+            {
+                BindingType = bindingTypeConditional,
+                Name = customDomainParameter,
+                CertificateId = certificateOrEmpty
+            };
     }
 }