diff --git a/frida_core/build.rs b/frida_core/build.rs
index d8675f5..7f76bb5 100644
--- a/frida_core/build.rs
+++ b/frida_core/build.rs
@@ -2,7 +2,6 @@
 use cc;
 
 fn main() {
-    if cfg!(target_os = "macos") {
-        cc::Build::new().file("src/c/utun.c").compile("utun");
-    }
+    #[cfg(target_os = "macos")]
+    cc::Build::new().file("src/c/utun.c").compile("utun");
 }
\ No newline at end of file