diff --git a/src/librustc/util/ppaux.rs b/src/librustc/util/ppaux.rs
index 79405b124001..34fea495aa64 100644
--- a/src/librustc/util/ppaux.rs
+++ b/src/librustc/util/ppaux.rs
@@ -1325,6 +1325,8 @@ define_print! {
                         }
                         if !is_sized {
                             write!(f, "{}?Sized", if first { " " } else { "+" })?;
+                        } else if first {
+                            write!(f, " Sized")?;
                         }
                         Ok(())
                     })