diff --git a/src/test/run-pass/extern-crosscrate.rs b/src/test/run-pass/extern-crosscrate.rs
index f3338475912..afe33dcfcea 100644
--- a/src/test/run-pass/extern-crosscrate.rs
+++ b/src/test/run-pass/extern-crosscrate.rs
@@ -1,3 +1,4 @@
+// xfail-fast
 //aux-build:extern-crosscrate-source.rs
 
 use externcallback(vers = "0.1");