diff --git a/1-js/06-advanced-functions/03-closure/5-function-in-if/solution.md b/1-js/06-advanced-functions/03-closure/5-function-in-if/solution.md
index e2e7a91b33..7e8a698ead 100644
--- a/1-js/06-advanced-functions/03-closure/5-function-in-if/solution.md
+++ b/1-js/06-advanced-functions/03-closure/5-function-in-if/solution.md
@@ -1,3 +1,10 @@
-The result is **an error**.
+With `'use strict'`:
 
-The function `sayHi` is declared inside the `if`, so it only lives inside it. There is no `sayHi` outside.
\ No newline at end of file
+An error occurs: `ReferenceError: sayHi is not defined`.
+The function `sayHi` is declared inside the block (`if`), so it only exists within that block.
+In strict mode, functions declared inside a block have block-level scope, similar to variables declared with let or const.
+
+Without `'use strict'`:
+
+The function `sayHi` is accessible outside the block. This is because, in non-strict mode (and older JavaScript specifications before ES6), functions declared inside blocks like `if`, `for`, etc.,
+are hoisted to the nearest function or global scope, making them accessible outside the block.