--- old/modules/javafx.graphics/src/main/java/javafx/css/StyleConverter.java	2018-07-04 16:15:44.899859952 +0530
+++ new/modules/javafx.graphics/src/main/java/javafx/css/StyleConverter.java	2018-07-04 16:15:44.659739951 +0530
@@ -153,7 +153,7 @@
      * of an {@code Enum} to an {@code Enum}
      * @see Enum#valueOf(java.lang.Class, java.lang.String)
      */
-    public static <E extends Enum<E>> StyleConverter<String, ? extends Enum<?>> getEnumConverter(Class<E> enumClass) {
+    public static <E extends Enum<E>> StyleConverter<String, E> getEnumConverter(Class<E> enumClass) {
         // TODO: reuse EnumConverter instances
         EnumConverter<E> converter;
         converter = new EnumConverter<>(enumClass);