diff --git a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/TopologyBuilder.java b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/TopologyBuilder.java
index 7cb4513626f936f42505d61f61cda6262ec2aa27..5e7f699d41f8d6b05ccc62c051510074806d54ef 100644
--- a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/TopologyBuilder.java
+++ b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/TopologyBuilder.java
@@ -108,14 +108,14 @@ class TopologyBuilder {
 
             applicationNode.setNumOfServer(serverService.getAllServer(applicationId, startSecondTimeBucket, endSecondTimeBucket).size());
             try {
-                Alarm alarm = alarmService.loadInstanceAlarmList(Const.EMPTY_STRING, startTimeBucket, endTimeBucket, 1000, 0);
+                Alarm alarm = alarmService.loadInstanceAlarmList(Const.EMPTY_STRING, step, startTimeBucket, endTimeBucket, 1000, 0);
                 applicationNode.setNumOfServerAlarm(alarm.getItems().size());
             } catch (ParseException e) {
                 logger.error(e.getMessage(), e);
             }
 
             try {
-                Alarm alarm = alarmService.loadServiceAlarmList(Const.EMPTY_STRING, startTimeBucket, endTimeBucket, 1000, 0);
+                Alarm alarm = alarmService.loadServiceAlarmList(Const.EMPTY_STRING, step, startTimeBucket, endTimeBucket, 1000, 0);
                 applicationNode.setNumOfServiceAlarm(alarm.getItems().size());
             } catch (ParseException e) {
                 logger.error(e.getMessage(), e);