diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
index 23d0761272..8d7c1cf476 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
@@ -211,7 +211,7 @@ Optional<Variant<String, NumberType>> get_string_or_number_option(GlobalObject&
 }
 
 // 13.6 ToTemporalOverflow ( normalizedOptions ), https://tc39.es/proposal-temporal/#sec-temporal-totemporaloverflow
-Optional<String> to_temporal_overflow(GlobalObject& global_object, Object& normalized_options)
+Optional<String> to_temporal_overflow(GlobalObject& global_object, Object const& normalized_options)
 {
     auto& vm = global_object.vm();
 
@@ -225,7 +225,7 @@ Optional<String> to_temporal_overflow(GlobalObject& global_object, Object& norma
 }
 
 // 13.8 ToTemporalRoundingMode ( normalizedOptions, fallback ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalroundingmode
-Optional<String> to_temporal_rounding_mode(GlobalObject& global_object, Object& normalized_options, String const& fallback)
+Optional<String> to_temporal_rounding_mode(GlobalObject& global_object, Object const& normalized_options, String const& fallback)
 {
     auto& vm = global_object.vm();
 
@@ -239,7 +239,7 @@ Optional<String> to_temporal_rounding_mode(GlobalObject& global_object, Object&
 }
 
 // 13.11 ToShowCalendarOption ( normalizedOptions ), https://tc39.es/proposal-temporal/#sec-temporal-toshowcalendaroption
-Optional<String> to_show_calendar_option(GlobalObject& global_object, Object& normalized_options)
+Optional<String> to_show_calendar_option(GlobalObject& global_object, Object const& normalized_options)
 {
     auto& vm = global_object.vm();
 
@@ -253,7 +253,7 @@ Optional<String> to_show_calendar_option(GlobalObject& global_object, Object& no
 }
 
 // 13.14 ToTemporalRoundingIncrement ( normalizedOptions, dividend, inclusive ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalroundingincrement
-u64 to_temporal_rounding_increment(GlobalObject& global_object, Object& normalized_options, Optional<double> dividend, bool inclusive)
+u64 to_temporal_rounding_increment(GlobalObject& global_object, Object const& normalized_options, Optional<double> dividend, bool inclusive)
 {
     auto& vm = global_object.vm();
 
@@ -307,7 +307,7 @@ u64 to_temporal_rounding_increment(GlobalObject& global_object, Object& normaliz
 }
 
 // 13.16 ToSecondsStringPrecision ( normalizedOptions ), https://tc39.es/proposal-temporal/#sec-temporal-tosecondsstringprecision
-Optional<SecondsStringPrecision> to_seconds_string_precision(GlobalObject& global_object, Object& normalized_options)
+Optional<SecondsStringPrecision> to_seconds_string_precision(GlobalObject& global_object, Object const& normalized_options)
 {
     auto& vm = global_object.vm();
 
@@ -403,7 +403,7 @@ static HashMap<StringView, StringView> plural_to_singular_units = {
 };
 
 // 13.17 ToLargestTemporalUnit ( normalizedOptions, disallowedUnits, fallback [ , autoValue ] ), https://tc39.es/proposal-temporal/#sec-temporal-tolargesttemporalunit
-Optional<String> to_largest_temporal_unit(GlobalObject& global_object, Object& normalized_options, Vector<StringView> const& disallowed_units, String const& fallback, Optional<String> auto_value)
+Optional<String> to_largest_temporal_unit(GlobalObject& global_object, Object const& normalized_options, Vector<StringView> const& disallowed_units, String const& fallback, Optional<String> auto_value)
 {
     auto& vm = global_object.vm();
 
@@ -443,7 +443,7 @@ Optional<String> to_largest_temporal_unit(GlobalObject& global_object, Object& n
 }
 
 // 13.18 ToSmallestTemporalUnit ( normalizedOptions, disallowedUnits, fallback ), https://tc39.es/proposal-temporal/#sec-temporal-tosmallesttemporalunit
-Optional<String> to_smallest_temporal_unit(GlobalObject& global_object, Object& normalized_options, Vector<StringView> const& disallowed_units, Optional<String> fallback)
+Optional<String> to_smallest_temporal_unit(GlobalObject& global_object, Object const& normalized_options, Vector<StringView> const& disallowed_units, Optional<String> fallback)
 {
     auto& vm = global_object.vm();
 
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
index 3904ed0e3e..cd284c875d 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
@@ -88,13 +88,13 @@ Object* get_options_object(GlobalObject&, Value options);
 Value get_option(GlobalObject&, Object const& options, PropertyName const& property, Vector<OptionType> const& types, Vector<StringView> const& values, Value fallback);
 template<typename NumberType>
 Optional<Variant<String, NumberType>> get_string_or_number_option(GlobalObject&, Object const& options, PropertyName const& property, Vector<StringView> const& string_values, NumberType minimum, NumberType maximum, Value fallback);
-Optional<String> to_temporal_overflow(GlobalObject&, Object& normalized_options);
-Optional<String> to_temporal_rounding_mode(GlobalObject&, Object& normalized_options, String const& fallback);
-Optional<String> to_show_calendar_option(GlobalObject&, Object& normalized_options);
-u64 to_temporal_rounding_increment(GlobalObject&, Object& normalized_options, Optional<double> dividend, bool inclusive);
-Optional<SecondsStringPrecision> to_seconds_string_precision(GlobalObject&, Object& normalized_options);
-Optional<String> to_largest_temporal_unit(GlobalObject&, Object& normalized_options, Vector<StringView> const& disallowed_units, String const& fallback, Optional<String> auto_value);
-Optional<String> to_smallest_temporal_unit(GlobalObject&, Object& normalized_options, Vector<StringView> const& disallowed_units, Optional<String> fallback);
+Optional<String> to_temporal_overflow(GlobalObject&, Object const& normalized_options);
+Optional<String> to_temporal_rounding_mode(GlobalObject&, Object const& normalized_options, String const& fallback);
+Optional<String> to_show_calendar_option(GlobalObject&, Object const& normalized_options);
+u64 to_temporal_rounding_increment(GlobalObject&, Object const& normalized_options, Optional<double> dividend, bool inclusive);
+Optional<SecondsStringPrecision> to_seconds_string_precision(GlobalObject&, Object const& normalized_options);
+Optional<String> to_largest_temporal_unit(GlobalObject&, Object const& normalized_options, Vector<StringView> const& disallowed_units, String const& fallback, Optional<String> auto_value);
+Optional<String> to_smallest_temporal_unit(GlobalObject&, Object const& normalized_options, Vector<StringView> const& disallowed_units, Optional<String> fallback);
 void validate_temporal_unit_range(GlobalObject&, StringView largest_unit, StringView smallest_unit);
 String larger_of_two_temporal_units(StringView, StringView);
 Optional<u16> maximum_temporal_duration_rounding_increment(StringView unit);