diff --git a/components/script/dom/bindings/typedarrays.rs b/components/script/dom/bindings/typedarrays.rs
index c5582ccc5f3..bc49c4678c1 100644
--- a/components/script/dom/bindings/typedarrays.rs
+++ b/components/script/dom/bindings/typedarrays.rs
@@ -183,16 +183,18 @@ where
         let mapping_slice_ptr =
             mapping.lock().unwrap().borrow_mut()[offset as usize..m_end as usize].as_mut_ptr();
 
-        let array_buffer = NewExternalArrayBuffer(
+        // rooted! is needed to ensure memory safety and prevent potential garbage collection issues.
+        // https://github.com/mozilla-spidermonkey/spidermonkey-embedding-examples/blob/esr78/docs/GC%20Rooting%20Guide.md#performance-tweaking
+        rooted!(in(*cx) let array_buffer = NewExternalArrayBuffer(
             *cx,
             range_size as usize,
             mapping_slice_ptr as _,
             Some(free_func),
             Arc::into_raw(mapping) as _,
-        );
+        ));
 
         HeapTypedArray {
-            internal: Heap::boxed(array_buffer),
+            internal: Heap::boxed(*array_buffer),
             phantom: PhantomData::default(),
         }
     }