diff --git a/src/libtest/lib.rs b/src/libtest/lib.rs
index 0692d7e5faa8..6f85b6306097 100644
--- a/src/libtest/lib.rs
+++ b/src/libtest/lib.rs
@@ -118,6 +118,7 @@ impl fmt::Display for TestName {
 #[derive(Clone, Copy)]
 enum NamePadding {
     PadNone,
+    #[allow(dead_code)]
     PadOnLeft,
     PadOnRight,
 }