diff --git a/src/libcore/ops/function.rs b/src/libcore/ops/function.rs
index 4f08aa451875f78f5dcc72d566e7593ea7fceeed..3e5cad2b185a14b252e5e2854e9ebfddc0cbfcce 100644
--- a/src/libcore/ops/function.rs
+++ b/src/libcore/ops/function.rs
@@ -160,7 +160,7 @@ pub trait FnMut<Args>: FnOnce<Args> {
 /// times. Because of this, if the only thing known about a type is that it
 /// implements `FnOnce`, it can only be called once.
 ///
-/// `FnOnce` is implemented automatically by closure that might consume captured
+/// `FnOnce` is implemented automatically by closures that might consume captured
 /// variables, as well as all types that implement [`FnMut`], e.g., (safe)
 /// [function pointers] (since `FnOnce` is a supertrait of [`FnMut`]).
 ///