diff --git a/core/src/main/java/com/taobao/arthas/core/command/klass100/RedefineCommand.java b/core/src/main/java/com/taobao/arthas/core/command/klass100/RedefineCommand.java
index b720e816..5b0a3d19 100644
--- a/core/src/main/java/com/taobao/arthas/core/command/klass100/RedefineCommand.java
+++ b/core/src/main/java/com/taobao/arthas/core/command/klass100/RedefineCommand.java
@@ -40,6 +40,7 @@ import com.taobao.middleware.cli.annotations.Summary;
 @Description(Constants.EXAMPLE +
                 "  redefine /tmp/Test.class\n" +
                 "  redefine -c 327a647b /tmp/Test.class /tmp/Test\\$Inner.class \n" +
+                "  redefine --classLoaderClass 'sun.misc.Launcher$AppClassLoader' /tmp/Test.class \n" +
                 Constants.WIKI + Constants.WIKI_HOME + "redefine")
 public class RedefineCommand extends AnnotatedCommand {
     private static final Logger logger = LoggerFactory.getLogger(RedefineCommand.class);