diff --git a/src/test/run-pass/issue-3979-2.rs b/src/test/run-pass/issue-3979-2.rs
index 7cc2bb49ef7..9401b24abb8 100644
--- a/src/test/run-pass/issue-3979-2.rs
+++ b/src/test/run-pass/issue-3979-2.rs
@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// xfail-test
 trait A {
     fn a_method();
 }