diff --git a/src/test/run-pass/trait-to-str.rs b/src/test/run-pass/trait-to-str.rs
index d3d22557c08..bd21ed345aa 100644
--- a/src/test/run-pass/trait-to-str.rs
+++ b/src/test/run-pass/trait-to-str.rs
@@ -1,3 +1,5 @@
+// xfail-fast
+
 #[no_core];
 
 use core;