diff --git a/src/challenges/challenge-05.md b/src/challenges/challenge-05.md
index 8253cf2..0c43f8c 100644
--- a/src/challenges/challenge-05.md
+++ b/src/challenges/challenge-05.md
@@ -15,7 +15,6 @@ enum LinkedListNode {
 fn main() {
     let node = LinkedListNode::NonEmpty(45, LinkedListNode::NonEmpty(50, LinkedListNode::Empty));
 
-    let sum = handle.join().unwrap();
     println!("{:?}", node)
 }
 ```
@@ -66,4 +65,4 @@ fn main() {
 
 With this change, Rust compiler can now calculate the size of the enum variant NonEmpty: sizeOf(i32) + sizeOf(Box pointer), which is 4 bytes for i32 + 8 bytes for a Box pointer on a 64 bit machine + padding. 
 ```
-</details>
\ No newline at end of file
+</details>