diff --git a/test-cargo-miri/tests/test.rs b/test-cargo-miri/tests/test.rs
index 4c196ef5e0f5..0095802a59a8 100644
--- a/test-cargo-miri/tests/test.rs
+++ b/test-cargo-miri/tests/test.rs
@@ -55,7 +55,7 @@ fn do_panic() { // In large, friendly letters :)
 
 // FIXME: see above
 #[test]
-#[allow(const_err)]
+#[allow(unconditional_panic)]
 #[cfg_attr(not(windows), should_panic(expected="the len is 0 but the index is 42"))]
 fn fail_index_check() {
     #[cfg(not(windows))]