diff --git a/src/ZB.MOM.WW.ScadaBridge.Host/SiteServiceRegistration.cs b/src/ZB.MOM.WW.ScadaBridge.Host/SiteServiceRegistration.cs
index 564d2a6d..dd400206 100644
--- a/src/ZB.MOM.WW.ScadaBridge.Host/SiteServiceRegistration.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.Host/SiteServiceRegistration.cs
@@ -105,10 +105,16 @@ public static class SiteServiceRegistration
     public static void BindSharedOptions(IServiceCollection services, IConfiguration config)
     {
         services.Configure<NodeOptions>(config.GetSection("ScadaBridge:Node"));
-        services.Configure<ClusterOptions>(config.GetSection("ScadaBridge:Cluster"));
+        // Bind + eagerly validate: ClusterOptionsValidator is registered (TryAddEnumerable)
+        // by the ClusterInfrastructure module, so chaining ValidateOnStart() here makes a bad
+        // ScadaBridge:Cluster section fail fast at host build instead of lazily on first resolve.
+        services.AddOptions<ClusterOptions>().Bind(config.GetSection("ScadaBridge:Cluster")).ValidateOnStart();
         services.Configure<DatabaseOptions>(config.GetSection("ScadaBridge:Database"));
         services.Configure<CommunicationOptions>(config.GetSection("ScadaBridge:Communication"));
-        services.Configure<HealthMonitoringOptions>(config.GetSection("ScadaBridge:HealthMonitoring"));
+        // Bind + eagerly validate: HealthMonitoringOptionsValidator is registered (TryAddEnumerable)
+        // by the HealthMonitoring module, so chaining ValidateOnStart() here makes a bad
+        // ScadaBridge:HealthMonitoring section fail fast at host build instead of lazily on first resolve.
+        services.AddOptions<HealthMonitoringOptions>().Bind(config.GetSection("ScadaBridge:HealthMonitoring")).ValidateOnStart();
         services.Configure<NotificationOptions>(config.GetSection("ScadaBridge:Notification"));
         services.Configure<LoggingOptions>(config.GetSection("ScadaBridge:Logging"));