diff --git a/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/HostSummaryRenderer.java b/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/HostSummaryRenderer.java
index 3d6b843c082..45e73ad0f8f 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/HostSummaryRenderer.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/HostSummaryRenderer.java
@@ -83,7 +83,7 @@ private void buildFinalizedSummary(TreeNode<Resource> queryResultTree, List<Obje
       Resource resource = node.getObject();
       String osType = (String) resource.getPropertyValue(HostResourceProvider.HOST_OS_TYPE_PROPERTY_ID);
       if (StringUtils.isNotBlank(osType)) {
-        osTypeCount.put(osType, osTypeCount.getOrDefault(osTypeCount, 0) + 1);
+        osTypeCount.merge(osType, 1, Integer::sum);
       }
     }
   }