diff --git a/src/lib.rs b/src/lib.rs
index b3a00fb..aed23c6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -139,9 +139,10 @@ impl AxoUpdater {
         };
 
         let installer_path = Utf8PathBuf::try_from(tempdir.path().join("installer"))?;
-        let installer_file = File::create(&installer_path)?;
 
-        if cfg!(unix) {
+        #[cfg(unix)]
+        {
+            let installer_file = File::create(&installer_path)?;
             let mut perms = installer_file.metadata()?.permissions();
             perms.set_mode(0o744);
             installer_file.set_permissions(perms)?;