diff --git a/index.test.ts b/index.test.ts
index 4c76e54..7bb85a9 100644
--- a/index.test.ts
+++ b/index.test.ts
@@ -105,12 +105,14 @@ test('person props default to null if no values present', async () => {
     })
     expect(event!.properties!.$set_once).toEqual({
         $initial_geoip_city_name: null, // default to null
+        $initial_geoip_city_confidence: null,
         $initial_geoip_country_name: 'Sweden',
         $initial_geoip_country_code: 'SE',
         $initial_geoip_continent_name: 'Europe',
         $initial_geoip_continent_code: 'EU',
         $initial_geoip_latitude: 58.4167,
         $initial_geoip_longitude: 15.6167,
+        $initial_geoip_accuracy_radius: 76,
         $initial_geoip_time_zone: 'Europe/Stockholm',
         $initial_geoip_subdivision_1_code: 'E',
         $initial_geoip_subdivision_1_name: 'Östergötland County',
diff --git a/index.ts b/index.ts
index 13ccd74..3cb67b4 100644
--- a/index.ts
+++ b/index.ts
@@ -54,7 +54,7 @@ const plugin: Plugin = {
                 const location: Record<string, any> = {}
                 if (response.city) {
                     location['city_name'] = response.city.names?.en
-                    location['city_confidence'] = response.city.confidence
+                    location['city_confidence'] = response.city.confidence ?? null
                 }
                 if (response.country) {
                     location['country_name'] = response.country.names?.en