diff --git a/components/script/dom/bindings/root.rs b/components/script/dom/bindings/root.rs
index 9f10fc87f2a..ae81e4909b9 100644
--- a/components/script/dom/bindings/root.rs
+++ b/components/script/dom/bindings/root.rs
@@ -35,8 +35,7 @@ use js::jsapi::{JSObject, JSTracer, Heap};
 use js::rust::GCMethods;
 use mitochondria::OnceCell;
 use script_layout_interface::TrustedNodeAddress;
-use script_thread::STACK_ROOTS;
-use std::cell::UnsafeCell;
+use std::cell::{Cell, UnsafeCell};
 use std::default::Default;
 use std::hash::{Hash, Hasher};
 #[cfg(debug_assertions)]
@@ -157,7 +156,7 @@ pub struct RootCollection {
 }
 
 /// A pointer to a RootCollection, for use in global variables.
-pub struct RootCollectionPtr(pub *const RootCollection);
+struct RootCollectionPtr(pub *const RootCollection);
 
 impl Copy for RootCollectionPtr {}
 impl Clone for RootCollectionPtr {
@@ -166,6 +165,8 @@ impl Clone for RootCollectionPtr {
     }
 }
 
+thread_local!(static STACK_ROOTS: Cell<Option<RootCollectionPtr>> = Cell::new(None));
+
 pub struct ThreadLocalStackRoots<'a>(PhantomData<&'a u32>);
 
 impl<'a> ThreadLocalStackRoots<'a> {
diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index eb8b9b389a7..1891e84784d 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -35,7 +35,7 @@ use dom::bindings::inheritance::Castable;
 use dom::bindings::num::Finite;
 use dom::bindings::reflector::DomObject;
 use dom::bindings::root::{Dom, DomRoot, MutNullableDom, RootCollection};
-use dom::bindings::root::{RootCollectionPtr, RootedReference, ThreadLocalStackRoots};
+use dom::bindings::root::{RootedReference, ThreadLocalStackRoots};
 use dom::bindings::str::DOMString;
 use dom::bindings::structuredclone::StructuredCloneData;
 use dom::bindings::trace::JSTraceable;
@@ -129,7 +129,6 @@ use webvr_traits::{WebVREvent, WebVRMsg};
 
 pub type ImageCacheMsg = (PipelineId, PendingImageResponse);
 
-thread_local!(pub static STACK_ROOTS: Cell<Option<RootCollectionPtr>> = Cell::new(None));
 thread_local!(static SCRIPT_THREAD_ROOT: Cell<Option<*const ScriptThread>> = Cell::new(None));
 
 pub unsafe fn trace_thread(tr: *mut JSTracer) {