diff --git a/test/SuperSocket.Tests/CommandTest.cs b/test/SuperSocket.Tests/CommandTest.cs
index 7273c1f63..8f0a61577 100644
--- a/test/SuperSocket.Tests/CommandTest.cs
+++ b/test/SuperSocket.Tests/CommandTest.cs
@@ -514,7 +514,7 @@ public void ResetTask()
             }
         }
 
-        public class DOUBLE : IAsyncCommand<StringPackageInfo>
+        class DOUBLE : IAsyncCommand<StringPackageInfo>
         {
             private readonly DataStore _dataStore;