diff --git a/src/DotNetCore.CAP/Internal/ISubscriberExecutor.Default.cs b/src/DotNetCore.CAP/Internal/ISubscriberExecutor.Default.cs
index 222a89b..24d3e00 100644
--- a/src/DotNetCore.CAP/Internal/ISubscriberExecutor.Default.cs
+++ b/src/DotNetCore.CAP/Internal/ISubscriberExecutor.Default.cs
@@ -12,7 +12,7 @@ namespace DotNetCore.CAP.Internal
         private readonly ILogger<DefaultSubscriberExecutor> _logger;
         private readonly MethodMatcherCache _selector;
 
-        public IConsumerInvoker Invoker { get; }
+        private IConsumerInvoker Invoker { get; }
 
         public DefaultSubscriberExecutor(MethodMatcherCache selector,
             IConsumerInvokerFactory consumerInvokerFactory,