1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index a2c859cf9fd..df4e51d8e9d 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -385,7 +385,7 @@ pub enum Pat_ {
     PatLit(P<Expr>),
     PatRange(P<Expr>, P<Expr>),
     /// [a, b, ..i, y, z] is represented as:
-    ///     PatVec(~[a, b], Some(i), ~[y, z])
+    ///     PatVec(box [a, b], Some(i), box [y, z])
     PatVec(Vec<P<Pat>>, Option<P<Pat>>, Vec<P<Pat>>),
     PatMac(Mac),
 }