diff --git a/src/test/ui/command/command-setgroups.rs b/src/test/ui/command/command-setgroups.rs
index 978c9c44486..3850f038442 100644
--- a/src/test/ui/command/command-setgroups.rs
+++ b/src/test/ui/command/command-setgroups.rs
@@ -11,6 +11,12 @@ use std::process::Command;
 use std::os::unix::process::CommandExt;
 
 fn main() {
+    #[cfg(unix)]
+    run()
+}
+
+#[cfg(unix)]
+fn run() {
     let max_ngroups = unsafe { libc::sysconf(libc::_SC_NGROUPS_MAX) };
     let max_ngroups = max_ngroups as u32 + 1;
     let vec: Vec<u32> = (0..max_ngroups).collect();