diff --git a/tutorials/katacoda/arthas-advanced-cn/case-classloader.md b/tutorials/katacoda/arthas-advanced-cn/case-classloader.md
index 110cdca4c..a7754a277 100644
--- a/tutorials/katacoda/arthas-advanced-cn/case-classloader.md
+++ b/tutorials/katacoda/arthas-advanced-cn/case-classloader.md
@@ -38,7 +38,7 @@ $ classloader -l
 
 列出上面的`org.apache.jasper.servlet.JasperLoader`加载的类：
 
-`classloader -a --classLoaderClass apache.jasper.servlet.JasperLoader`{{execute T2}}
+`classloader -a --classLoaderClass org.apache.jasper.servlet.JasperLoader`{{execute T2}}
 
 ```bash
 $ classloader -a --classLoaderClass apache.jasper.servlet.JasperLoader
diff --git a/tutorials/katacoda/arthas-advanced-en/case-classloader.md b/tutorials/katacoda/arthas-advanced-en/case-classloader.md
index 2e4717159..d93257918 100644
--- a/tutorials/katacoda/arthas-advanced-en/case-classloader.md
+++ b/tutorials/katacoda/arthas-advanced-en/case-classloader.md
@@ -38,7 +38,7 @@ $ classloader -l
 
 List all classes loaded by `org.apache.jasper.servlet.JasperLoader`:
 
-`classloader -a --classLoaderClass apache.jasper.servlet.JasperLoader`{{execute T2}}
+`classloader -a --classLoaderClass org.apache.jasper.servlet.JasperLoader`{{execute T2}}
 
 ```bash
 $ classloader -a --classLoaderClass apache.jasper.servlet.JasperLoader