diff --git a/src/services/aphp/servicePerimeters.ts b/src/services/aphp/servicePerimeters.ts
index e6cc86bf6..d1317a16f 100644
--- a/src/services/aphp/servicePerimeters.ts
+++ b/src/services/aphp/servicePerimeters.ts
@@ -134,7 +134,7 @@ const servicesPerimeters: IServicePerimeters = {
     }
 
     const caresiteIds = selectedPopulation
-      .map((perimeter) => perimeter.id)
+      .map((perimeter) => perimeter?.id)
       .filter((item: any, index: number, array: any[]) => item && array.indexOf(item) === index)
       .join(',')