diff --git a/java/com/google/gerrit/server/documentation/MarkdownFormatterHeader.java b/java/com/google/gerrit/server/documentation/MarkdownFormatterHeader.java
index 482b0584a4..a2b2fdb996 100644
--- a/java/com/google/gerrit/server/documentation/MarkdownFormatterHeader.java
+++ b/java/com/google/gerrit/server/documentation/MarkdownFormatterHeader.java
@@ -62,7 +62,7 @@ public class MarkdownFormatterHeader {
     public Set<NodeRenderingHandler<?>> getNodeRenderingHandlers() {
       return new HashSet<NodeRenderingHandler<? extends Node>>(
           Arrays.asList(
-              new NodeRenderingHandler<AnchorLink>(
+              new NodeRenderingHandler<>(
                   AnchorLink.class,
                   new CustomNodeRenderer<AnchorLink>() {
                     @Override
@@ -71,7 +71,7 @@ public class MarkdownFormatterHeader {
                       HeadingNodeRenderer.this.render(node, context, html);
                     }
                   }),
-              new NodeRenderingHandler<Heading>(
+              new NodeRenderingHandler<>(
                   Heading.class,
                   new CustomNodeRenderer<Heading>() {
                     @Override
@@ -152,8 +152,7 @@ public class MarkdownFormatterHeader {
 
       @Override
       public Set<Class<? extends NodeRendererFactory>> getDelegates() {
-        Set<Class<? extends NodeRendererFactory>> delegates =
-            new HashSet<Class<? extends NodeRendererFactory>>();
+        Set<Class<? extends NodeRendererFactory>> delegates = new HashSet<>();
         delegates.add(AnchorLinkNodeRenderer.Factory.class);
         return delegates;
       }