diff --git a/library/std/tests/switch-stdout.rs b/library/std/tests/switch-stdout.rs
index 2f01504043d..28ce6dfccd3 100644
--- a/library/std/tests/switch-stdout.rs
+++ b/library/std/tests/switch-stdout.rs
@@ -1,3 +1,5 @@
+#[cfg(any(target_family = "unix", target_family = "windows"))]
+
 use std::fs::File;
 use std::io::{Read, Write};