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diff --git a/src/test/ui/compile-fail-migration/cycle-trait-supertrait-direct.rs b/src/test/ui/compile-fail-migration/cycle-trait-supertrait-direct.rs
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+++ b/src/test/ui/compile-fail-migration/cycle-trait-supertrait-direct.rs
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+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test a supertrait cycle where a trait extends itself.
+
+trait Chromosome: Chromosome {
+    //~^ ERROR cycle detected
+}
+
+fn main() { }