diff --git a/src/librustc_front/print/pprust.rs b/src/librustc_front/print/pprust.rs
index 143dfce09b6..1100f084454 100644
--- a/src/librustc_front/print/pprust.rs
+++ b/src/librustc_front/print/pprust.rs
@@ -1014,6 +1014,11 @@ impl<'a> State<'a> {
         try!(self.hardbreak_if_not_bol());
         try!(self.maybe_print_comment(ii.span.lo));
         try!(self.print_outer_attributes(&ii.attrs));
+
+        if let hir::Defaultness::Default = ii.defaultness {
+            try!(self.word_nbsp("default"));
+        }
+
         match ii.node {
             hir::ImplItemKind::Const(ref ty, ref expr) => {
                 try!(self.print_associated_const(ii.name, &ty, Some(&expr), ii.vis));
diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
index 2cfed1f82f7..533487ae1c5 100644
--- a/src/libsyntax/print/pprust.rs
+++ b/src/libsyntax/print/pprust.rs
@@ -1582,6 +1582,9 @@ impl<'a> State<'a> {
         try!(self.hardbreak_if_not_bol());
         try!(self.maybe_print_comment(ii.span.lo));
         try!(self.print_outer_attributes(&ii.attrs));
+        if let ast::Defaultness::Default = ii.defaultness {
+            try!(self.word_nbsp("default"));
+        }
         match ii.node {
             ast::ImplItemKind::Const(ref ty, ref expr) => {
                 try!(self.print_associated_const(ii.ident, &ty, Some(&expr), ii.vis));
diff --git a/src/test/run-pass/specialization/specialization-default-methods.rs b/src/test/run-pass/specialization/specialization-default-methods.rs
index b2fad9d171f..3f0f21ff03f 100644
--- a/src/test/run-pass/specialization/specialization-default-methods.rs
+++ b/src/test/run-pass/specialization/specialization-default-methods.rs
@@ -63,7 +63,8 @@ trait Bar {
 //                   /  \
 //            Vec<i32>  $Vec<i64>
 
-impl<T> Bar for T {} // use the provided method
+// use the provided method
+impl<T> Bar for T {}
 
 impl Bar for i32 {
     fn bar(&self) -> i32 { 1 }