1 files changed, 7 insertions, 1 deletions
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index 6df8bb5f7aa..37827e6311a 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -145,7 +145,13 @@ impl BoxAny for Box<Any> {
 
 impl<T: ?Sized + fmt::Show> fmt::Show for Box<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        (**self).fmt(f)
+        write!(f, "Box({:?})", &**self)
+    }
+}
+
+impl<T: ?Sized + fmt::String> fmt::String for Box<T> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fmt::String::fmt(&**self, f)
     }
 }