diff --git a/src/chapter_3/chapter_3_13.md b/src/chapter_3/chapter_3_13.md
index 7f8c08c..c0980c7 100644
--- a/src/chapter_3/chapter_3_13.md
+++ b/src/chapter_3/chapter_3_13.md
@@ -246,7 +246,6 @@ fn main() {
 ```rust
 struct Closure<'a> {
     x: i32,
-    y: i32,
 }
 
 impl<'a> FnOnce<(i32,)> for Closure<'a> {