--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/model/JavacElements.java	Mon Dec 04 10:13:58 2017 +0100
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/model/JavacElements.java	Mon Dec 04 17:54:49 2017 +0000
@@ -51,6 +51,7 @@
 import com.sun.tools.javac.code.Directive.RequiresDirective;
 import com.sun.tools.javac.code.Directive.RequiresFlag;
 import com.sun.tools.javac.code.Scope.WriteableScope;
+import com.sun.tools.javac.code.Source.Feature;
 import com.sun.tools.javac.code.Symbol.*;
 import com.sun.tools.javac.comp.AttrContext;
 import com.sun.tools.javac.comp.Enter;
@@ -114,7 +115,7 @@
         javacTaskImpl = t instanceof JavacTaskImpl ? (JavacTaskImpl) t : null;
         log = Log.instance(context);
         Source source = Source.instance(context);
-        allowModules = source.allowModules();
+        allowModules = Feature.MODULES.allowedInSource(source);
     }
 
     @Override @DefinedBy(Api.LANGUAGE_MODEL)