diff --git a/controller/channel-test.go b/controller/channel-test.go
index 4778ff0c7..5bbc20ebc 100644
--- a/controller/channel-test.go
+++ b/controller/channel-test.go
@@ -622,10 +622,10 @@ func AutomaticallyTestChannels() {
 				time.Sleep(10 * time.Minute)
 				continue
 			}
-			frequency := operation_setting.GetMonitorSetting().AutoTestChannelMinutes
-			common.SysLog(fmt.Sprintf("automatically test channels with interval %d minutes", frequency))
 			for {
+				frequency := operation_setting.GetMonitorSetting().AutoTestChannelMinutes
 				time.Sleep(time.Duration(frequency) * time.Minute)
+				common.SysLog(fmt.Sprintf("automatically test channels with interval %d minutes", frequency))
 				common.SysLog("automatically testing all channels")
 				_ = testAllChannels(false)
 				common.SysLog("automatically channel test finished")