diff --git a/tests/testsuite/mock-std/src/libtest/lib.rs b/tests/testsuite/mock-std/src/libtest/lib.rs
index 4f5b7b1bff2..a112855f536 100644
--- a/tests/testsuite/mock-std/src/libtest/lib.rs
+++ b/tests/testsuite/mock-std/src/libtest/lib.rs
@@ -1,6 +1,6 @@
 #![feature(staged_api)]
 #![feature(test)]
-#![unstable(feature = "test", issue = "0")]
+#![unstable(feature = "test", issue = "none")]
 
 extern crate test;