diff --git a/src-tauri/src/constants.rs b/src-tauri/src/constants.rs
index 20b461f31..b241ff220 100644
--- a/src-tauri/src/constants.rs
+++ b/src-tauri/src/constants.rs
@@ -16,6 +16,7 @@ pub mod network {
 
 pub mod proxy {
     /// Single source of the macOS default bypass list; both proxy backends compose from it.
+    #[cfg(target_os = "macos")]
     pub const MACOS_DEFAULT_BYPASS: &str =
         "127.0.0.1,192.168.0.0/16,10.0.0.0/8,172.16.0.0/12,localhost,*.local,*.crashlytics.com,<local>";
 }