diff --git a/src/doc/book/references-and-borrowing.md b/src/doc/book/references-and-borrowing.md
index d8758e0c695c2..546636720ca21 100644
--- a/src/doc/book/references-and-borrowing.md
+++ b/src/doc/book/references-and-borrowing.md
@@ -263,7 +263,7 @@ for i in &v {
 }
 ```
 
-This prints out one through three. As we iterate through the vectors, we’re
+This prints out one through three. As we iterate through the vector, we’re
 only given references to the elements. And `v` is itself borrowed as immutable,
 which means we can’t change it while we’re iterating: