diff --git a/framework/src/Volo.Abp.BackgroundWorkers.Hangfire/Volo/Abp/BackgroundWorkers/Hangfire/HangfireBackgroundWorkerManager.cs b/framework/src/Volo.Abp.BackgroundWorkers.Hangfire/Volo/Abp/BackgroundWorkers/Hangfire/HangfireBackgroundWorkerManager.cs
index bf613f6835..272cc3cdcd 100644
--- a/framework/src/Volo.Abp.BackgroundWorkers.Hangfire/Volo/Abp/BackgroundWorkers/Hangfire/HangfireBackgroundWorkerManager.cs
+++ b/framework/src/Volo.Abp.BackgroundWorkers.Hangfire/Volo/Abp/BackgroundWorkers/Hangfire/HangfireBackgroundWorkerManager.cs
@@ -42,7 +42,7 @@ namespace Volo.Abp.BackgroundWorkers.Hangfire
 
                 if (worker is AsyncPeriodicBackgroundWorkerBase or PeriodicBackgroundWorkerBase)
                 {
-                    var timer = (AbpTimer) worker.GetType()
+                    var timer = (AbpAsyncTimer) worker.GetType()
                         .GetProperty("Timer", BindingFlags.Instance | BindingFlags.NonPublic)?.GetValue(worker);
                     period = timer?.Period;
                 }