diff --git a/components/script/dom/mouseevent.rs b/components/script/dom/mouseevent.rs
index e51b8391ee0..32af28262a0 100644
--- a/components/script/dom/mouseevent.rs
+++ b/components/script/dom/mouseevent.rs
@@ -6,7 +6,6 @@ use dom::bindings::codegen::Bindings::MouseEventBinding;
 use dom::bindings::codegen::Bindings::MouseEventBinding::MouseEventMethods;
 use dom::bindings::codegen::Bindings::UIEventBinding::UIEventMethods;
 use dom::bindings::codegen::InheritTypes::{EventCast, UIEventCast, MouseEventDerived};
-use dom::bindings::error::Error::NotSupported;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, MutNullableHeap, Root, RootedReference};