diff --git a/src/matrix/e2ee/megolm/keybackup/KeyBackup.ts b/src/matrix/e2ee/megolm/keybackup/KeyBackup.ts
index e97eb0cf..089d2b0a 100644
--- a/src/matrix/e2ee/megolm/keybackup/KeyBackup.ts
+++ b/src/matrix/e2ee/megolm/keybackup/KeyBackup.ts
@@ -51,6 +51,7 @@ export class KeyBackup {
         private readonly keyLoader: KeyLoader,
         private readonly storage: Storage,
         private readonly platform: Platform,
+        private readonly maxDelay: number = 10000
     ) {}
 
     get hasStopped(): boolean { return this._stopped; }
@@ -114,7 +115,7 @@ export class KeyBackup {
             let total = 0;
             let amountFinished = 0;
             while (true) {
-                const waitMs = this.platform.random() * 10000;
+                const waitMs = this.platform.random() * this.maxDelay;
                 const timeout = this.platform.clock.createTimeout(waitMs);
                 setAbortable(timeout);
                 await timeout.elapsed();