diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
index c9e414c649..e0800b6684 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
@@ -1004,7 +1004,7 @@ ThrowCompletionOr<TemporalTimeZone> parse_temporal_time_zone_string(GlobalObject
 }
 
 // 13.45 ParseTemporalYearMonthString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalyearmonthstring
-Optional<TemporalYearMonth> parse_temporal_year_month_string(GlobalObject& global_object, String const& iso_string)
+ThrowCompletionOr<TemporalYearMonth> parse_temporal_year_month_string(GlobalObject& global_object, String const& iso_string)
 {
     // 1. Assert: Type(isoString) is String.
 
@@ -1013,7 +1013,7 @@ Optional<TemporalYearMonth> parse_temporal_year_month_string(GlobalObject& globa
     // TODO
 
     // 3. Let result be ? ParseISODateTime(isoString).
-    auto result = TRY_OR_DISCARD(parse_iso_date_time(global_object, iso_string));
+    auto result = TRY(parse_iso_date_time(global_object, iso_string));
 
     // 4. Return the Record { [[Year]]: result.[[Year]], [[Month]]: result.[[Month]], [[Day]]: result.[[Day]], [[Calendar]]: result.[[Calendar]] }.
     return TemporalYearMonth { .year = result.year, .month = result.month, .day = result.day, .calendar = move(result.calendar) };
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
index 915eda15ce..dfe8c5ffd5 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
@@ -111,7 +111,7 @@ ThrowCompletionOr<ISODateTime> parse_temporal_date_time_string(GlobalObject&, St
 ThrowCompletionOr<TemporalDuration> parse_temporal_duration_string(GlobalObject&, String const& iso_string);
 ThrowCompletionOr<TemporalTime> parse_temporal_time_string(GlobalObject&, String const& iso_string);
 ThrowCompletionOr<TemporalTimeZone> parse_temporal_time_zone_string(GlobalObject&, String const& iso_string);
-Optional<TemporalYearMonth> parse_temporal_year_month_string(GlobalObject&, String const& iso_string);
+ThrowCompletionOr<TemporalYearMonth> parse_temporal_year_month_string(GlobalObject&, String const& iso_string);
 double to_positive_integer(GlobalObject&, Value argument);
 Object* prepare_temporal_fields(GlobalObject&, Object const& fields, Vector<String> const& field_names, Vector<StringView> const& required_fields);
 
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp
index d7c59afe23..39f1a7f8bd 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp
@@ -79,17 +79,15 @@ ThrowCompletionOr<PlainYearMonth*> to_temporal_year_month(GlobalObject& global_o
         return throw_completion(exception->value());
 
     // 6. Let result be ? ParseTemporalYearMonthString(string).
-    auto result = parse_temporal_year_month_string(global_object, string);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto result = TRY(parse_temporal_year_month_string(global_object, string));
 
     // 7. Let calendar be ? ToTemporalCalendarWithISODefault(result.[[Calendar]]).
-    auto* calendar = to_temporal_calendar_with_iso_default(global_object, result->calendar.has_value() ? js_string(vm, *result->calendar) : js_undefined());
+    auto* calendar = to_temporal_calendar_with_iso_default(global_object, result.calendar.has_value() ? js_string(vm, *result.calendar) : js_undefined());
     if (auto* exception = vm.exception())
         return throw_completion(exception->value());
 
     // 8. Set result to ? CreateTemporalYearMonth(result.[[Year]], result.[[Month]], calendar, result.[[Day]]).
-    auto* creation_result = TRY(create_temporal_year_month(global_object, result->year, result->month, *calendar, result->day));
+    auto* creation_result = TRY(create_temporal_year_month(global_object, result.year, result.month, *calendar, result.day));
 
     // 9. Let canonicalYearMonthOptions be ! OrdinaryObjectCreate(null).
     auto* canonical_year_month_options = Object::create(global_object, nullptr);