diff --git a/packages/workbox-background-sync/Queue.mjs b/packages/workbox-background-sync/Queue.mjs
index e9bb839f31..63abcdff4f 100644
--- a/packages/workbox-background-sync/Queue.mjs
+++ b/packages/workbox-background-sync/Queue.mjs
@@ -104,8 +104,6 @@ class Queue {
    * `queueDidReplay` callback is invoked (which implies the queue is
    * now empty). If any of the requests fail, a new sync registration is
    * created to retry again later.
-   *
-   * @return {Promise}
    */
   async replayRequests() {
     const now = Date.now();
@@ -137,13 +135,13 @@ class Queue {
     await this._runCallback('queueDidReplay', replayedRequests);
 
     // If any requests failed, put the failed requests back in the queue
-    // and reject promise.
+    // and rethrow the failed requests.
     if (failedRequests.length) {
       await Promise.all(failedRequests.map((storableRequest) => {
         return this._queueStore.addEntry(storableRequest);
       }));
 
-      return Promise.reject(failedRequests);
+      throw new Error(failedRequests);
     }
   }
 
diff --git a/test/workbox-background-sync/node/lib/test-Queue.mjs b/test/workbox-background-sync/node/lib/test-Queue.mjs
index 113fef0337..626b70900e 100644
--- a/test/workbox-background-sync/node/lib/test-Queue.mjs
+++ b/test/workbox-background-sync/node/lib/test-Queue.mjs
@@ -304,7 +304,7 @@ describe(`[workbox-background-sync] Queue`, function() {
         return;
       }
 
-      return Promise.reject('should have exit from catch');
+      throw new Error('should have exit from catch');
     });
 
     it(`should reject replayRequests promise if re-fetching fails`,
@@ -329,7 +329,7 @@ describe(`[workbox-background-sync] Queue`, function() {
         return;
       }
 
-      return Promise.reject('should have exit from catch');
+      throw new Error('should have exit from catch');
     });
 
     it(`should invoke all replay callbacks`, async function() {