diff --git a/samples/Sample.Kafka.MySql/Controllers/ValuesController.cs b/samples/Sample.Kafka.MySql/Controllers/ValuesController.cs
index 21510bb..f5ce61f 100644
--- a/samples/Sample.Kafka.MySql/Controllers/ValuesController.cs
+++ b/samples/Sample.Kafka.MySql/Controllers/ValuesController.cs
@@ -26,7 +26,7 @@ namespace Sample.Kafka.MySql.Controllers
 
                 //your business code here
 
-                await _capBus.PublishAsync("xxx.xxx.test2", 123456, transaction);
+                await _capBus.PublishAsync("xxx.xxx.test2", 123456);
 
                 transaction.Commit();
             }
diff --git a/samples/Sample.Kafka.MySql/Startup.cs b/samples/Sample.Kafka.MySql/Startup.cs
index 59c4636..3a6a8f7 100644
--- a/samples/Sample.Kafka.MySql/Startup.cs
+++ b/samples/Sample.Kafka.MySql/Startup.cs
@@ -21,8 +21,6 @@ namespace Sample.Kafka.MySql
         public void Configure(IApplicationBuilder app)
         {
             app.UseMvc();
-
-            app.UseCap();
         }
     }
 }
\ No newline at end of file