diff --git a/src/builtins/builtins-temporal-gen.cc b/src/builtins/builtins-temporal-gen.cc
index eaa2eade1c..98c947ab7e 100644
--- a/src/builtins/builtins-temporal-gen.cc
+++ b/src/builtins/builtins-temporal-gen.cc
@@ -106,8 +106,8 @@ TNode<JSArray> TemporalBuiltinsAssembler::CalendarFieldsArrayFromIterable(
     // Notice this spec text is in the Chapter 15 of the #sup part not #sec
     // part.
     // 7. If calendar.[[Identifier]] is "iso8601", then
-    const TNode<Uint32T> flags =
-        LoadObjectField<Uint32T>(calendar, JSTemporalCalendar::kFlagsOffset);
+    const TNode<Int32T> flags = LoadAndUntagToWord32ObjectField(
+        calendar, JSTemporalCalendar::kFlagsOffset);
     // calendar is "iso8601" while the index of calendar is 0
     const TNode<IntPtrT> index = Signed(
         DecodeWordFromWord32<JSTemporalCalendar::CalendarIndexBits>(flags));
diff --git a/test/intl/temporal/calendar/fields.js b/test/intl/temporal/calendar/fields.js
new file mode 100644
index 0000000000..e3a4c7d746
--- /dev/null
+++ b/test/intl/temporal/calendar/fields.js
@@ -0,0 +1,24 @@
+// Copyright 2022 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Flags: --harmony-temporal
+
+assertEquals(["year"],
+    (new Temporal.Calendar("iso8601")).fields(["year"]));
+
+assertEquals(["month", "year"],
+    (new Temporal.Calendar("iso8601")).fields(["month", "year"]));
+
+assertEquals(["year", "era", "eraYear"],
+    (new Temporal.Calendar("japanese")).fields(["year"]));
+
+assertEquals(["month", "year", "era", "eraYear"],
+    (new Temporal.Calendar("japanese")).fields(["month", "year"]));
+
+assertEquals(["year", "era", "eraYear"],
+    (new Temporal.Calendar("roc")).fields(["year"]));
+
+assertThrows(
+    () => (new Temporal.Calendar("japanese")).fields(["hello", "world"]),
+    RangeError);