diff --git a/bash.md b/bash.md
index c079175f0a..3f9dde2254 100644
--- a/bash.md
+++ b/bash.md
@@ -220,9 +220,9 @@ comment
 
 ### Length
 
-| Expression | Description      |
-| ---------- | ---------------- |
-| `${#foo}`  | Length of `$foo` |
+| Expression    | Description      |
+| ------------- | ---------------- |
+| `${#foo[@]}`  | Length of `$foo` |
 
 ### Manipulation