diff --git a/dubbo-monitor/dubbo-monitor-api/src/test/java/com/alibaba/dubbo/monitor/support/AbstractMonitorFactoryTest.java b/dubbo-monitor/dubbo-monitor-api/src/test/java/com/alibaba/dubbo/monitor/support/AbstractMonitorFactoryTest.java
index 64847af251cf..300ff3ceddd2 100644
--- a/dubbo-monitor/dubbo-monitor-api/src/test/java/com/alibaba/dubbo/monitor/support/AbstractMonitorFactoryTest.java
+++ b/dubbo-monitor/dubbo-monitor-api/src/test/java/com/alibaba/dubbo/monitor/support/AbstractMonitorFactoryTest.java
@@ -65,6 +65,7 @@ public void testMonitorFactoryCache() throws Exception {
         URL url = URL.valueOf("dubbo://" + NetUtils.getLocalAddress().getHostAddress() + ":2233");
         Monitor monitor1 = monitorFactory.getMonitor(url);
         Monitor monitor2 = monitorFactory.getMonitor(url);
+
         if (monitor1 == null || monitor2 == null) {
             Thread.sleep(2000);
             monitor1 = monitorFactory.getMonitor(url);