--- a/langtools/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/AbstractPackageIndexWriter.java	Tue Apr 25 18:35:24 2017 -0700
+++ b/langtools/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/AbstractPackageIndexWriter.java	Wed Apr 26 08:15:40 2017 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -160,7 +160,7 @@
             htmlTree.addStyle(HtmlStyle.indexNav);
             HtmlTree ul = new HtmlTree(HtmlTag.UL);
             addAllClassesLink(ul);
-            if (configuration.showModules) {
+            if (configuration.showModules  && configuration.modules.size() > 1) {
                 addAllModulesLink(ul);
             }
             htmlTree.addContent(ul);