diff --git a/app/sdk/src/stream.ts b/app/sdk/src/stream.ts
index ab14aebb..2f380f36 100644
--- a/app/sdk/src/stream.ts
+++ b/app/sdk/src/stream.ts
@@ -385,6 +385,7 @@ export class StreamModule {
   }
 
   public async clearBlockedChannelTopic(channelId: string, topicId: string) {
+    const { guid } = this;
     const id = `'':${channelId}:${topicId}`
     await this.store.clearMarker(guid, 'blocked_topic', id);
     if (this.focus) {