diff --git a/src/ServiceAnt.IocInstaller.Autofac/ServiceAntModule.cs b/src/ServiceAnt.IocInstaller.Autofac/ServiceAntModule.cs
index 184d700..335cdca 100644
--- a/src/ServiceAnt.IocInstaller.Autofac/ServiceAntModule.cs
+++ b/src/ServiceAnt.IocInstaller.Autofac/ServiceAntModule.cs
@@ -21,7 +21,7 @@ public class ServiceAntModule : Module
         /// <summary>
         /// Constructor
         /// </summary>
-        /// <param name="handlerAssemblies"> the assemblies which containg handler, thos will be register to container</param>
+        /// <param name="handlerAssemblies"> the assemblies which containg handler, those will be register to container</param>
         public ServiceAntModule(params System.Reflection.Assembly[] handlerAssemblies)
         {
             _handlerAssemblies = handlerAssemblies;
diff --git a/src/ServiceAnt.IocInstaller.Castle/ServiceAntInstaller.cs b/src/ServiceAnt.IocInstaller.Castle/ServiceAntInstaller.cs
index 25aa493..68725ff 100644
--- a/src/ServiceAnt.IocInstaller.Castle/ServiceAntInstaller.cs
+++ b/src/ServiceAnt.IocInstaller.Castle/ServiceAntInstaller.cs
@@ -26,7 +26,7 @@ public class ServiceAntInstaller : IWindsorInstaller
         /// <summary>
         /// Constructor
         /// </summary>
-        /// <param name="handlerAssemblies"> the assemblies which containg handler, thos will be register to container</param>
+        /// <param name="handlerAssemblies"> the assemblies which containg handler, those will be register to container</param>
         public ServiceAntInstaller(params Assembly[] handlerAssemblies)
         {
             _handlerAssemblies = handlerAssemblies;
diff --git a/src/ServiceAnt/IServiceBus.cs b/src/ServiceAnt/IServiceBus.cs
index 6ba5c65..4a58729 100644
--- a/src/ServiceAnt/IServiceBus.cs
+++ b/src/ServiceAnt/IServiceBus.cs
@@ -6,6 +6,33 @@
 
 namespace ServiceAnt
 {
+    /// <summary>
+    /// BusMessageLevel
+    /// </summary>
+    public enum LogLevel
+    {
+        /// <summary>
+        /// Debug
+        /// </summary>
+        DEBUG,
+        /// <summary>
+        /// INFO
+        /// </summary>
+        INFO,
+        /// <summary>
+        /// Error
+        /// </summary>
+        ERROR
+    }
+
+    /// <summary>
+    /// This delegate used to handle bus message
+    /// </summary>
+    /// <param name="msgLevel">message level</param>
+    /// <param name="message">message</param>
+    /// <param name="ex">if happended exception, it will return it</param>
+    public delegate void LogBusMessage(LogLevel msgLevel, string message, Exception ex);
+
     /// <summary>
     /// It used to publish event or send a request
     /// </summary>
@@ -14,7 +41,7 @@ public interface IServiceBus : IAddSubscription, IAddRequestHandler
         /// <summary>
         /// Use to log message of bus
         /// </summary>
-        event Action<string, string, Exception> OnLogBusMessage;
+        event LogBusMessage OnLogBusMessage;
 
         /// <summary>
         /// Publish a event
diff --git a/src/ServiceAnt/InProcessServiceBus.cs b/src/ServiceAnt/InProcessServiceBus.cs
index bf8e6f5..eb15d39 100644
--- a/src/ServiceAnt/InProcessServiceBus.cs
+++ b/src/ServiceAnt/InProcessServiceBus.cs
@@ -22,7 +22,7 @@ public class InProcessServiceBus : IServiceBus
         /// <summary>
         /// Use to log message of bus
         /// </summary>
-        public event Action<string, string, Exception> OnLogBusMessage;
+        public event LogBusMessage OnLogBusMessage;
 
         private static Lazy<InProcessServiceBus> _defaultInstance = new Lazy<InProcessServiceBus>();
 
@@ -163,7 +163,7 @@ private async Task ProcessEvent(string eventName, string message)
                 }
                 catch (Exception ex)
                 {
-                    LogMessage( "error", "There has raised a error when publishing event.", ex);
+                    LogMessage( LogLevel.ERROR, "There has raised a error when publishing event.", ex);
                 }
             }
         }
@@ -294,7 +294,7 @@ private async Task<T> ProcessRequest<T>(string eventName, string message)
                 }
                 catch (Exception ex)
                 {
-                    LogMessage("error", "There has raised a error when send request.", ex);
+                    LogMessage(LogLevel.ERROR, "There has raised a error when send request.", ex);
                 }
             }
 
@@ -303,7 +303,7 @@ private async Task<T> ProcessRequest<T>(string eventName, string message)
 
 #endregion
 
-        private void LogMessage(string type, string value, Exception ex)
+        private void LogMessage(LogLevel type, string value, Exception ex)
         {
             OnLogBusMessage?.Invoke(type, value, ex);
         }
diff --git a/test/ServiceAnt.IocInstaller.Castle.test/ServiceAnt.IocInstaller.Castle.Test.csproj b/test/ServiceAnt.IocInstaller.Castle.test/ServiceAnt.IocInstaller.Castle.Test.csproj
index a53669f..91f0227 100644
--- a/test/ServiceAnt.IocInstaller.Castle.test/ServiceAnt.IocInstaller.Castle.Test.csproj
+++ b/test/ServiceAnt.IocInstaller.Castle.test/ServiceAnt.IocInstaller.Castle.Test.csproj
@@ -11,7 +11,7 @@
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net452' ">
-    <PackageReference Include="Castle.Windsor" Version="3.3.0" />
+    <PackageReference Include="Castle.Windsor" Version="3.4.0" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp2.0' ">
     <PackageReference Include="Castle.Windsor" Version="4.1.0" />