diff --git a/src/libcollections/vec.rs b/src/libcollections/vec.rs
index 98b5c4663cd0..3c221f0fea0d 100644
--- a/src/libcollections/vec.rs
+++ b/src/libcollections/vec.rs
@@ -342,7 +342,7 @@ pub fn with_capacity(capacity: usize) -> Vec<T> {
     ///
     /// * `ptr` needs to have been previously allocated via `String`/`Vec<T>`
     ///   (at least, it's highly likely to be incorrect if it wasn't).
-    /// * `length` needs to be the length that less than or equal to `capacity`.
+    /// * `length` needs to be less than or equal to `capacity`.
     /// * `capacity` needs to be the capacity that the pointer was allocated with.
     ///
     /// Violating these may cause problems like corrupting the allocator's