diff --git a/backend/src/config/index.ts b/backend/src/config/index.ts
index efda3fc31..2555a1730 100644
--- a/backend/src/config/index.ts
+++ b/backend/src/config/index.ts
@@ -130,7 +130,7 @@ const federation = {
   FEDERATION_BACKEND_SEND_ON_API: process.env.FEDERATION_BACKEND_SEND_ON_API ?? '1_0',
   // ?? operator don't work here as expected
   FEDERATION_VALIDATE_COMMUNITY_TIMER:
-    Number(process.env.FEDERATION_VALIDATE_COMMUNITY_TIMER) || 60000,
+    Number(process.env.FEDERATION_VALIDATE_COMMUNITY_TIMER ?? 60000) ,
   FEDERATION_XCOM_SENDCOINS_ENABLED:
     process.env.FEDERATION_XCOM_SENDCOINS_ENABLED === 'true' ?? false,
   // default value for community-uuid is equal uuid of stage-3