diff --git a/frontend/app/player/web/WebPlayer.ts b/frontend/app/player/web/WebPlayer.ts
index e3862c255..9cb01d655 100644
--- a/frontend/app/player/web/WebPlayer.ts
+++ b/frontend/app/player/web/WebPlayer.ts
@@ -4,8 +4,8 @@ import type { Store } from '../common/types'
 import Player, { State as PlayerState } from '../player/Player'
 
 import MessageManager from './MessageManager'
-import InspectorController from './InspectorController'
-import TargetMarker from './TargetMarker'
+import InspectorController from './addons/InspectorController'
+import TargetMarker from './addons/TargetMarker'
 import AssistManager, {
   INITIAL_STATE as ASSIST_INITIAL_STATE,
 } from './assist/AssistManager'
@@ -14,7 +14,7 @@ import Screen from './Screen/Screen'
 // export type State = typeof WebPlayer.INITIAL_STATE
 
 export default class WebPlayer extends Player {
-  static INITIAL_STATE = {
+  static readonly INITIAL_STATE = {
     ...Player.INITIAL_STATE,
     ...TargetMarker.INITIAL_STATE,
 
diff --git a/frontend/app/player/web/InspectorController.ts b/frontend/app/player/web/addons/InspectorController.ts
similarity index 90%
rename from frontend/app/player/web/InspectorController.ts
rename to frontend/app/player/web/addons/InspectorController.ts
index 44f798bea..987b9b0bc 100644
--- a/frontend/app/player/web/InspectorController.ts
+++ b/frontend/app/player/web/addons/InspectorController.ts
@@ -1,7 +1,7 @@
-import Marker from './Screen/Marker'
-import Inspector from './Screen/Inspector'
-import Screen from './Screen/Screen'
-import type { Dimensions } from './Screen/types'
+import Marker from '../Screen/Marker'
+import Inspector from '../Screen/Inspector'
+import Screen from '../Screen/Screen'
+import type { Dimensions } from '../Screen/types'
 
 
 export default class InspectorController {
diff --git a/frontend/app/player/web/TargetMarker.ts b/frontend/app/player/web/addons/TargetMarker.ts
similarity index 96%
rename from frontend/app/player/web/TargetMarker.ts
rename to frontend/app/player/web/addons/TargetMarker.ts
index f3b4d1d7d..49282e96a 100644
--- a/frontend/app/player/web/TargetMarker.ts
+++ b/frontend/app/player/web/addons/TargetMarker.ts
@@ -1,6 +1,6 @@
-import type Screen from './Screen/Screen'
-import type { Point } from './Screen/types'
-import type { Store } from '../common/types'
+import type Screen from '../Screen/Screen'
+import type { Point } from '../Screen/types'
+import type { Store } from '../../common/types'
 
 
 function getOffset(el: Element, innerWindow: Window) {