diff --git a/src/test/run-pass/const-enum-vec-index.rs b/src/test/run-pass/const-enum-vec-index.rs
index 4af6a6d10d5bf..9c1a4dbdffa84 100644
--- a/src/test/run-pass/const-enum-vec-index.rs
+++ b/src/test/run-pass/const-enum-vec-index.rs
@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#[derive(Copy, Clone)]
 enum E { V1(isize), V0 }
+
 const C: &'static [E] = &[E::V0, E::V1(0xDEADBEE)];
 static C0: E = C[0];
 static C1: E = C[1];