diff --git a/tests/ui/runtime/on-broken-pipe/error.rs b/tests/ui/runtime/on-broken-pipe/error.rs
index ab2036c2f415..0a020873df08 100644
--- a/tests/ui/runtime/on-broken-pipe/error.rs
+++ b/tests/ui/runtime/on-broken-pipe/error.rs
@@ -1,6 +1,7 @@
 //@ run-pass
 //@ aux-build:sigpipe-utils.rs
 //@ compile-flags: -Zon-broken-pipe=error
+//@ only-unix because SIGPIPE is a unix thing
 
 fn main() {
     extern crate sigpipe_utils;
diff --git a/tests/ui/runtime/on-broken-pipe/inherit.rs b/tests/ui/runtime/on-broken-pipe/inherit.rs
index 64909b735281..f3c8140eaaef 100644
--- a/tests/ui/runtime/on-broken-pipe/inherit.rs
+++ b/tests/ui/runtime/on-broken-pipe/inherit.rs
@@ -4,6 +4,7 @@
 //@ aux-bin: assert-inherit-sig_ign.rs
 //@ run-pass
 //@ compile-flags: -Zon-broken-pipe=kill
+//@ only-unix because SIGPIPE is a unix thing
 
 #![feature(rustc_private)]
 
diff --git a/tests/ui/runtime/on-broken-pipe/kill.rs b/tests/ui/runtime/on-broken-pipe/kill.rs
index 5dace6f1c6ff..748e53ffcdbe 100644
--- a/tests/ui/runtime/on-broken-pipe/kill.rs
+++ b/tests/ui/runtime/on-broken-pipe/kill.rs
@@ -1,6 +1,7 @@
 //@ run-pass
 //@ aux-build:sigpipe-utils.rs
 //@ compile-flags: -Zon-broken-pipe=kill
+//@ only-unix because SIGPIPE is a unix thing
 
 fn main() {
     extern crate sigpipe_utils;
diff --git a/tests/ui/runtime/on-broken-pipe/not-used.rs b/tests/ui/runtime/on-broken-pipe/not-used.rs
index e31236f2b3df..22a26047874f 100644
--- a/tests/ui/runtime/on-broken-pipe/not-used.rs
+++ b/tests/ui/runtime/on-broken-pipe/not-used.rs
@@ -1,5 +1,6 @@
 //@ run-pass
 //@ aux-build:sigpipe-utils.rs
+//@ only-unix because SIGPIPE is a unix thing
 
 fn main() {
     extern crate sigpipe_utils;
diff --git a/tests/ui/runtime/on-broken-pipe/with-rustc_main.rs b/tests/ui/runtime/on-broken-pipe/with-rustc_main.rs
index c1731200038b..c40590ad87f4 100644
--- a/tests/ui/runtime/on-broken-pipe/with-rustc_main.rs
+++ b/tests/ui/runtime/on-broken-pipe/with-rustc_main.rs
@@ -1,6 +1,7 @@
 //@ run-pass
 //@ aux-build:sigpipe-utils.rs
 //@ compile-flags: -Zon-broken-pipe=kill
+//@ only-unix because SIGPIPE is a unix thing
 
 #![feature(rustc_attrs)]