diff --git a/winx/src/lib.rs b/winx/src/lib.rs
index 05cdbfe490..f017a7fe2b 100644
--- a/winx/src/lib.rs
+++ b/winx/src/lib.rs
@@ -19,6 +19,7 @@
         clippy::use_self
     )
 )]
+#![cfg(windows)]
 
 #[macro_use]
 extern crate bitflags;