--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/WorkArounds.java	Mon Dec 04 10:13:58 2017 +0100
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/WorkArounds.java	Mon Dec 04 17:54:49 2017 +0000
@@ -55,6 +55,7 @@
 import com.sun.tools.javac.code.Attribute;
 import com.sun.tools.javac.code.Flags;
 import com.sun.tools.javac.code.Scope;
+import com.sun.tools.javac.code.Source.Feature;
 import com.sun.tools.javac.code.Symbol;
 import com.sun.tools.javac.code.Symbol.ClassSymbol;
 import com.sun.tools.javac.code.Symbol.MethodSymbol;
@@ -187,7 +188,7 @@
     // TODO: we need ElementUtils.getPackage to cope with input strings
     // to return the proper unnamedPackage for all supported releases.
     PackageElement getUnnamedPackage() {
-        return (toolEnv.source.allowModules())
+        return (Feature.MODULES.allowedInSource(toolEnv.source))
                 ? toolEnv.syms.unnamedModule.unnamedPackage
                 : toolEnv.syms.noModule.unnamedPackage;
     }