diff --git a/src/job_manager.go b/src/job_manager.go
index 4b82c68..a1dc1c5 100644
--- a/src/job_manager.go
+++ b/src/job_manager.go
@@ -114,9 +114,8 @@ func (jm *JobManager) logs(taskName string) MsgLog {
 	spider.Method = "GET"
 	spider.URL = "http://" + jm.jobStatus.tasks[taskName].Node + ":8000/logs?id=" + jm.jobStatus.tasks[taskName].Id
 
-	task, ok := jm.jobStatus.tasks[taskName]
-	if !ok {
-		log.Warn(taskName, task)
+	if _, ok := jm.jobStatus.tasks[taskName]; !ok {
+		return MsgLog{Code: -1, Error: "Task not exist"}
 	}
 
 	err := spider.do()