diff --git a/tracker/tracker/src/main/app/index.ts b/tracker/tracker/src/main/app/index.ts
index e2753592e..5d8998146 100644
--- a/tracker/tracker/src/main/app/index.ts
+++ b/tracker/tracker/src/main/app/index.ts
@@ -60,8 +60,8 @@ type AppOptions = {
   __is_snippet: boolean
   __debug_report_edp: string | null
   __debug__?: LoggerOptions
-  localStorage: Storage
-  sessionStorage: Storage
+  localStorage: Storage | null
+  sessionStorage: Storage | null
 
   // @deprecated
   onStart?: StartCallback
@@ -115,8 +115,8 @@ export default class App {
         verbose: false,
         __is_snippet: false,
         __debug_report_edp: null,
-        localStorage: window.localStorage,
-        sessionStorage: window.sessionStorage,
+        localStorage: null,
+        sessionStorage: null,
       },
       options,
     )
@@ -139,8 +139,8 @@ export default class App {
         Object.entries(metadata).forEach(([key, value]) => this.send(Metadata(key, value)))
       }
     })
-    this.localStorage = this.options.localStorage
-    this.sessionStorage = this.options.sessionStorage
+    this.localStorage = this.options.localStorage || window.localStorage
+    this.sessionStorage = this.options.sessionStorage || window.sessionStorage
 
     if (sessionToken != null) {
       this.sessionStorage.setItem(this.options.session_token_key, sessionToken)