1 files changed, 2 insertions, 2 deletions
diff --git a/src/libsyntax/parse/token.rs b/src/libsyntax/parse/token.rs
index 6d2acd3d803..f1dd844fc7c 100644
--- a/src/libsyntax/parse/token.rs
+++ b/src/libsyntax/parse/token.rs
@@ -588,8 +588,8 @@ impl BytesContainer for InternedString {
 }
 
 impl fmt::Show for InternedString {
-    fn fmt(obj: &InternedString, f: &mut fmt::Formatter) {
-        write!(f.buf, "{}", obj.string.as_slice());
+    fn fmt(obj: &InternedString, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f.buf, "{}", obj.string.as_slice())
     }
 }