diff --git a/src/ch02-00-guessing-game-tutorial.md b/src/ch02-00-guessing-game-tutorial.md
index c22698f..a01b89b 100644
--- a/src/ch02-00-guessing-game-tutorial.md
+++ b/src/ch02-00-guessing-game-tutorial.md
@@ -679,7 +679,7 @@ use rand::Rng;
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1, 101);
+    let secret_number = rand::thread_rng().gen_range(1..101);
 
     loop {
         println!("Please input your guess.");