diff --git a/d2/src/main/java/com/linkedin/d2/balancer/servers/ZooKeeperAnnouncer.java b/d2/src/main/java/com/linkedin/d2/balancer/servers/ZooKeeperAnnouncer.java
index 4aa73a681..0a85e8547 100644
--- a/d2/src/main/java/com/linkedin/d2/balancer/servers/ZooKeeperAnnouncer.java
+++ b/d2/src/main/java/com/linkedin/d2/balancer/servers/ZooKeeperAnnouncer.java
@@ -176,7 +176,8 @@ public ZooKeeperAnnouncer(LoadBalancerServer server, boolean initialIsUp,
     _executorService = executorService;
     _eventEmitter = eventEmitter;
 
-    if(server instanceof ZooKeeperServer){
+    if (server instanceof ZooKeeperServer)
+    {
       ((ZooKeeperServer) server).setServiceDiscoveryEventHelper(this);
     }
   }