diff --git a/lib/detect.ts b/lib/detect.ts
index 0d0614b1..2597739b 100644
--- a/lib/detect.ts
+++ b/lib/detect.ts
@@ -70,7 +70,7 @@ export async function getLocation(ip, req) {
     return {
       country,
       subdivision1: region,
-      city: decodeURIComponent(city),
+      city: city ? decodeURIComponent(city) : undefined,
     };
   }