diff --git a/src/service/event.batch.service.ts b/src/service/event.batch.service.ts
index b68698b..8526c26 100644
--- a/src/service/event.batch.service.ts
+++ b/src/service/event.batch.service.ts
@@ -66,6 +66,7 @@ export class EventBatchSvr {
             _param = this.buildQueryParams(cfg, toBlock)
             uninParams.push(_param)
             topicsSet = new Set()
+            topicsSet.add(cfg.topic)
           } else {
             if (!topicsSet.has(cfg.topic)) {
               _param.params[0].topics.push(cfg.topic)