--- old/src/java.base/share/classes/java/time/temporal/WeekFields.java	2017-11-22 10:51:18.652267189 -0800
+++ new/src/java.base/share/classes/java/time/temporal/WeekFields.java	2017-11-22 10:51:18.285260171 -0800
@@ -1045,7 +1045,8 @@
             Objects.requireNonNull(locale, "locale");
             if (rangeUnit == YEARS) {  // only have values for week-of-year
                 LocaleResources lr = LocaleProviderAdapter.getResourceBundleBased()
-                        .getLocaleResources(locale);
+                        .getLocaleResources(
+                            CalendarDataUtility.findRegionOverride(locale).orElse(locale));
                 ResourceBundle rb = lr.getJavaTimeFormatData();
                 return rb.containsKey("field.week") ? rb.getString("field.week") : name;
             }