diff --git a/queues/offline_monitoring.go b/queues/offline_monitoring.go
index cc81d4f..ebefe16 100644
--- a/queues/offline_monitoring.go
+++ b/queues/offline_monitoring.go
@@ -30,7 +30,7 @@ func offlineMonitoring() {
 				}
 
 				// 没有启用离线监听时，即使客户端已经离线则也不执行
-				if *clientInfo.OfflineMonitoring != 1 || clientInfo.Email == "" {
+				if clientInfo.OfflineMonitoring == nil || *clientInfo.OfflineMonitoring != 1 || clientInfo.Email == "" {
 					continue
 				}