diff --git a/src/libcore/rt/io/net/tcp.rs b/src/libcore/rt/io/net/tcp.rs
index eec3614d1297..a833e92fc108 100644
--- a/src/libcore/rt/io/net/tcp.rs
+++ b/src/libcore/rt/io/net/tcp.rs
@@ -314,7 +314,7 @@ mod test {
         }
     }
 
-    #[test] #[ignore(reason = "hangs on mac")]
+    #[test]
     fn multiple_connect_interleaved_lazy_schedule() {
         do run_in_newsched_task {
             let addr = next_test_ip4();