diff --git a/ACTIVATION_CODE b/ACTIVATION_CODE.txt
similarity index 100%
rename from ACTIVATION_CODE
rename to ACTIVATION_CODE.txt
diff --git a/README.txt b/README.txt
index 99fa51a..05340ac 100644
--- a/README.txt
+++ b/README.txt
@@ -17,7 +17,7 @@
  5. If show error msg: 
     "Error opening zip file or JAR manifest missing : jetbrains-agent.jar"
     Please modify the jar file path to absolute path.
- X. Or active with the activation code in the file: ACTIVATION_CODE
+ X. Or active with the activation code in the file: ACTIVATION_CODE.txt
 
 
  使用方法:
@@ -34,7 +34,7 @@
  5. 如果提示错误: 
     "Error opening zip file or JAR manifest missing : jetbrains-agent.jar"
     这种情况请试着填上jar文件的绝对路径.
- X. 或者使用文件：ACTIVATION_CODE 内的注册码激活。
+ X. 或者使用文件：ACTIVATION_CODE.txt 内的注册码激活。
 
  ** 未注册IDE找不到Help菜单可选择“试用（Evaluate for free）”后打开主界面。