diff --git a/components/script/lib.rs b/components/script/lib.rs
index 5b16377fe68b..20eb3336a38f 100644
--- a/components/script/lib.rs
+++ b/components/script/lib.rs
@@ -10,7 +10,6 @@
 #![feature(custom_attribute)]
 #![feature(custom_derive)]
 #![feature(fnbox)]
-#![feature(iter_arith)]
 #![feature(mpsc_select)]
 #![feature(nonzero)]
 #![feature(on_unimplemented)]