diff --git a/src/std/string.md b/src/std/string.md
index 3d19d446..252db373 100644
--- a/src/std/string.md
+++ b/src/std/string.md
@@ -15,7 +15,7 @@ fn main() {
 
     let s3 = String::from("🇨🇭");
     println!("s3: len = {}, number of chars = {}", s3.len(),
-             s3.chars().collect::<std::vec::Vec<_>>().len());
+             s3.chars().count());
 }
 ```