diff --git a/README.md b/README.md
index 3f29a07..5d8c053 100644
--- a/README.md
+++ b/README.md
@@ -6,11 +6,11 @@ personal diary with txt style, can be private!
 
 ## environment variables
 
-|     name      |  description  |    required     |
-| :-----------: | :-----------: | :-------------: |
-| `TD_USERNAME` |   user name   |       no        |
-| `TD_USERPASS` | user password |       yes       |
-| `TD_PRIVATE`  | user password | empty = `false` |
+|     name      |   description   |    required     |
+| :-----------: | :-------------: | :-------------: |
+| `TD_USERNAME` |    user name    |       no        |
+| `TD_USERPASS` |  user password  |       yes       |
+| `TD_PRIVATE`  | post visibility | empty = `false` |
 
 ## volumes (docker)