diff --git a/components/script/dom/gamepad.rs b/components/script/dom/gamepad.rs
index cb0c20ac50e..a7f65050941 100644
--- a/components/script/dom/gamepad.rs
+++ b/components/script/dom/gamepad.rs
@@ -20,6 +20,7 @@ use dom_struct::dom_struct;
 use js::jsapi::{Heap, JSContext, JSObject};
 use js::typedarray::{Float64Array, CreateWith};
 use std::cell::Cell;
+use std::ptr;
 use webvr_traits::{WebVRGamepadData, WebVRGamepadHand, WebVRGamepadState};
 
 #[dom_struct]
@@ -86,9 +87,13 @@ impl Gamepad {
                                                                     data.display_id),
                                          global,
                                          GamepadBinding::Wrap);
+
+        let cx = global.get_cx();
+        rooted!(in (cx) let mut array = ptr::null_mut());
         unsafe {
-           let _ = Float64Array::create(global.get_cx(), CreateWith::Slice(&state.axes), gamepad.axes.handle_mut());
+            let _ = Float64Array::create(cx, CreateWith::Slice(&state.axes), array.handle_mut());
         }
+        gamepad.axes.set(array.get());
 
         gamepad
     }
diff --git a/components/script/dom/vreyeparameters.rs b/components/script/dom/vreyeparameters.rs
index af39c789638..ab568287064 100644
--- a/components/script/dom/vreyeparameters.rs
+++ b/components/script/dom/vreyeparameters.rs
@@ -14,6 +14,7 @@ use dom_struct::dom_struct;
 use js::jsapi::{Heap, JSContext, JSObject};
 use js::typedarray::{Float32Array, CreateWith};
 use std::default::Default;
+use std::ptr;
 use webvr_traits::WebVREyeParameters;
 
 #[dom_struct]
@@ -41,14 +42,16 @@ impl VREyeParameters {
     pub fn new(parameters: WebVREyeParameters, global: &GlobalScope) -> Root<VREyeParameters> {
         let fov = VRFieldOfView::new(&global, parameters.field_of_view.clone());
 
+        let cx = global.get_cx();
+        rooted!(in (cx) let mut array = ptr::null_mut());
+        unsafe {
+            let _ = Float32Array::create(cx, CreateWith::Slice(&parameters.offset), array.handle_mut());
+        }
+
         let eye_parameters = reflect_dom_object(box VREyeParameters::new_inherited(parameters, &fov),
                                                 global,
                                                 VREyeParametersBinding::Wrap);
-        unsafe {
-            let _ = Float32Array::create(global.get_cx(),
-                                         CreateWith::Slice(&eye_parameters.parameters.borrow().offset),
-                                         eye_parameters.offset.handle_mut());
-        }
+        eye_parameters.offset.set(array.get());
 
         eye_parameters
     }
diff --git a/components/script/dom/vrframedata.rs b/components/script/dom/vrframedata.rs
index eef69e5ff46..a7b70c7ead3 100644
--- a/components/script/dom/vrframedata.rs
+++ b/components/script/dom/vrframedata.rs
@@ -16,6 +16,7 @@ use dom_struct::dom_struct;
 use js::jsapi::{Heap, JSContext, JSObject};
 use js::typedarray::{Float32Array, CreateWith};
 use std::cell::Cell;
+use std::ptr;
 use webvr_traits::WebVRFrameData;
 
 #[dom_struct]
@@ -72,9 +73,11 @@ impl VRFrameData {
 
 #[allow(unsafe_code)]
 fn create_typed_array(cx: *mut JSContext, src: &[f32], dst: &Heap<*mut JSObject>) {
+    rooted!(in (cx) let mut array = ptr::null_mut());
     unsafe {
-        let _ = Float32Array::create(cx, CreateWith::Slice(src), dst.handle_mut());
+        let _ = Float32Array::create(cx, CreateWith::Slice(src), array.handle_mut());
     }
+    (*dst).set(array.get());
 }
 
 impl VRFrameData {
diff --git a/components/script/dom/vrpose.rs b/components/script/dom/vrpose.rs
index 542059ca799..ee035e2a0f1 100644
--- a/components/script/dom/vrpose.rs
+++ b/components/script/dom/vrpose.rs
@@ -32,7 +32,9 @@ unsafe fn update_or_create_typed_array(cx: *mut JSContext,
     match src {
         Some(data) => {
             if dst.get().is_null() {
-                let _ = Float32Array::create(cx, CreateWith::Slice(data), dst.handle_mut());
+                rooted!(in (cx) let mut array = ptr::null_mut());
+                let _ = Float32Array::create(cx, CreateWith::Slice(data), array.handle_mut());
+                (*dst).set(array.get());
             } else {
                 typedarray!(in(cx) let array: Float32Array = dst.get());
                 if let Ok(mut array) = array {
diff --git a/components/script/dom/vrstageparameters.rs b/components/script/dom/vrstageparameters.rs
index e709411c25a..9c38fb8d494 100644
--- a/components/script/dom/vrstageparameters.rs
+++ b/components/script/dom/vrstageparameters.rs
@@ -13,6 +13,7 @@ use dom::globalscope::GlobalScope;
 use dom_struct::dom_struct;
 use js::jsapi::{Heap, JSContext, JSObject};
 use js::typedarray::{Float32Array, CreateWith};
+use std::ptr;
 use webvr_traits::WebVRStageParameters;
 
 #[dom_struct]
@@ -37,15 +38,17 @@ impl VRStageParameters {
     #[allow(unsafe_code)]
     pub fn new(parameters: WebVRStageParameters, global: &GlobalScope) -> Root<VRStageParameters> {
         let cx = global.get_cx();
+        rooted!(in (cx) let mut array = ptr::null_mut());
+        unsafe {
+            let _ = Float32Array::create(cx, CreateWith::Slice(&parameters.sitting_to_standing_transform),
+                                                               array.handle_mut());
+        }
+
         let stage_parameters  = reflect_dom_object(box VRStageParameters::new_inherited(parameters),
                                                    global,
                                                    VRStageParametersBinding::Wrap);
-        unsafe {
-           let source = &stage_parameters.parameters.borrow().sitting_to_standing_transform;
-           let _ = Float32Array::create(cx,
-                                        CreateWith::Slice(source),
-                                        stage_parameters.transform.handle_mut());
-        }
+
+        stage_parameters.transform.set(array.get());
 
         stage_parameters
     }