diff --git a/src/IConfigOptions.ts b/src/IConfigOptions.ts
index fffa3fbb9ff..8234f5bc757 100644
--- a/src/IConfigOptions.ts
+++ b/src/IConfigOptions.ts
@@ -99,7 +99,7 @@ export interface IConfigOptions {
     features?: Record<string, boolean>; // <FeatureName, EnabledBool>
 
     bug_report_endpoint_url?: string; // omission disables bug reporting
-    uisi_autorageshake_app?: string;
+    uisi_autorageshake_app?: string; // defaults to "element-auto-uisi"
     sentry?: {
         dsn: string;
         environment?: string; // "production", etc
diff --git a/src/SdkConfig.ts b/src/SdkConfig.ts
index 06fd7f45e66..5aaab6e2f43 100644
--- a/src/SdkConfig.ts
+++ b/src/SdkConfig.ts
@@ -27,6 +27,8 @@ export const DEFAULTS: IConfigOptions = {
     integrations_ui_url: "https://scalar.vector.im/",
     integrations_rest_url: "https://scalar.vector.im/api",
     bug_report_endpoint_url: null,
+    uisi_autorageshake_app: "element-auto-uisi",
+
     jitsi: {
         preferred_domain: "meet.element.io",
     },