diff --git a/core/fetch/src/fetch.ts b/core/fetch/src/fetch.ts
index e95792df7..b7622e93f 100644
--- a/core/fetch/src/fetch.ts
+++ b/core/fetch/src/fetch.ts
@@ -346,7 +346,7 @@ async function _handleRetryPattern(options: Required<FetchOptions>): Promise<Res
   catch (err) {
     logger.accident('fetch', 'fetch_failed_retry', (err as Error)?.message || 'fetch failed and retry', err);
 
-    if (globalThis.navigator != null && navigator.onLine === false) {
+    if (globalThis.navigator?.onLine === false) {
       throw new Error('offline');
     }