diff --git a/components/style/lib.rs b/components/style/lib.rs
index b1cec716fcf..2f0cbc978a7 100644
--- a/components/style/lib.rs
+++ b/components/style/lib.rs
@@ -62,6 +62,7 @@ pub use servo_arc;
 #[cfg(feature = "servo")]
 #[macro_use]
 extern crate servo_atoms;
+#[cfg(target_pointer_width = "64")]
 #[macro_use]
 extern crate static_assertions;
 #[macro_use]