diff --git a/components/style/lib.rs b/components/style/lib.rs
index 6d576c842de..35b1ba0a1ce 100644
--- a/components/style/lib.rs
+++ b/components/style/lib.rs
@@ -62,7 +62,7 @@ extern crate heapsize;
 #[allow(unused_extern_crates)]
 #[macro_use]
 extern crate lazy_static;
-extern crate libc;
+#[cfg(feature = "gecko")] extern crate libc;
 #[macro_use]
 extern crate log;
 #[allow(unused_extern_crates)]