diff --git a/packages/ember/addon/index.ts b/packages/ember/addon/index.ts
index 388d5dd1ab4e..5eb1a9cd5735 100644
--- a/packages/ember/addon/index.ts
+++ b/packages/ember/addon/index.ts
@@ -18,7 +18,7 @@ function _getSentryInitConfig() {
   return _global.__sentryEmberConfig;
 }
 
-export function InitSentryForEmber(_runtimeConfig: BrowserOptions | undefined) {
+export function InitSentryForEmber(_runtimeConfig?: BrowserOptions) {
   const environmentConfig = getOwnConfig<OwnConfig>().sentryConfig;
 
   assert('Missing configuration.', environmentConfig);