diff --git a/components/script/dom/navigator.rs b/components/script/dom/navigator.rs
index 1d60759f1d7..49d7646b3c8 100644
--- a/components/script/dom/navigator.rs
+++ b/components/script/dom/navigator.rs
@@ -10,6 +10,7 @@ use crate::dom::bindings::root::{DomRoot, MutNullableDom};
 use crate::dom::bindings::str::DOMString;
 use crate::dom::bluetooth::Bluetooth;
 use crate::dom::gamepadlist::GamepadList;
+use crate::dom::mediadevices::MediaDevices;
 use crate::dom::mimetypearray::MimeTypeArray;
 use crate::dom::navigatorinfo;
 use crate::dom::permissions::Permissions;
@@ -29,6 +30,7 @@ pub struct Navigator {
     mime_types: MutNullableDom<MimeTypeArray>,
     service_worker: MutNullableDom<ServiceWorkerContainer>,
     xr: MutNullableDom<XR>,
+    mediadevices: MutNullableDom<MediaDevices>,
     gamepads: MutNullableDom<GamepadList>,
     permissions: MutNullableDom<Permissions>,
 }
@@ -42,6 +44,7 @@ impl Navigator {
             mime_types: Default::default(),
             service_worker: Default::default(),
             xr: Default::default(),
+            mediadevices: Default::default(),
             gamepads: Default::default(),
             permissions: Default::default(),
         }
@@ -161,4 +164,9 @@ impl NavigatorMethods for Navigator {
     fn Xr(&self) -> DomRoot<XR> {
         self.xr.or_init(|| XR::new(&self.global()))
     }
+
+    /// https://w3c.github.io/mediacapture-main/#dom-navigator-mediadevices
+    fn MediaDevices(&self) -> DomRoot<MediaDevices> {
+        self.mediadevices.or_init(|| MediaDevices::new(&self.global()))
+    }
 }
diff --git a/components/script/dom/webidls/MediaDevices.webidl b/components/script/dom/webidls/MediaDevices.webidl
index d22dbb2dff4..da877bde267 100644
--- a/components/script/dom/webidls/MediaDevices.webidl
+++ b/components/script/dom/webidls/MediaDevices.webidl
@@ -13,7 +13,7 @@ interface MediaDevices : EventTarget {
 
 partial interface Navigator {
     // [SameObject, SecureContext]
-    // readonly        attribute MediaDevices mediaDevices;
+    [Pref="dom.webrtc.enabled"] readonly        attribute MediaDevices mediaDevices;
 };
 
 partial interface MediaDevices {