diff --git a/DI/XDIHelperExtension.cs b/DI/XDIHelperExtension.cs
index b0fe593..6dd755f 100644
--- a/DI/XDIHelperExtension.cs
+++ b/DI/XDIHelperExtension.cs
@@ -61,6 +61,7 @@ namespace xPushService.DI
         /// </summary>
         /// <param name="services"></param>
         /// <param name="config"></param>
+        /// <param name="lifeTime"></param>
         public static void AddXPushService(
             this IServiceCollection services,
             IConfiguration config,
@@ -80,6 +81,7 @@ namespace xPushService.DI
         /// </summary>
         /// <param name="services"></param>
         /// <param name="config"></param>
+        /// <param name="lifeTime"></param>
         public static void AddXPushService(
             this IServiceCollection services,
             XPushServiceConfiguration config,
diff --git a/Helpers/XPushServiceHelper.cs b/Helpers/XPushServiceHelper.cs
index 7b2d17a..5417da2 100644
--- a/Helpers/XPushServiceHelper.cs
+++ b/Helpers/XPushServiceHelper.cs
@@ -10,14 +10,13 @@ namespace xPushService.Helpers {
         /// <summary>
         /// a collection of Hubs for Registring ...
         /// </summary>
-        /// <typeparam name="XHubDescriptor"></typeparam>
         /// <returns></returns>
         private List<XHubDescriptor> hubs = new List<XHubDescriptor> ();
 
         /// <summary>
         /// add specified hub to provided hubs for registration ...
         /// </summary>
-        /// <param name="reoute"></param>
+        /// <param name="route"></param>
         /// <typeparam name="TXHub"></typeparam>
         public void AddHub<TXHub> (string route) where TXHub : XBaseHub {
             //