diff --git a/src/traits/from-iterator.md b/src/traits/from-iterator.md
index 4fa3ac9c..2eb89330 100644
--- a/src/traits/from-iterator.md
+++ b/src/traits/from-iterator.md
@@ -9,6 +9,7 @@ fn main() {
         .into_iter()
         .map(|prime| prime * prime)
         .collect::<Vec<_>>();
+    println!("prime_squares: {prime_squares:?}");
 }
 ```