diff --git a/backend/src/index.ts b/backend/src/index.ts
index 2cb7ab9a0..10b7c91ac 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -17,6 +17,7 @@ async function main() {
       console.log(`GraphIQL available at http://localhost:${CONFIG.PORT}`)
     }
   })
+  startValidateCommunities(Number(CONFIG.FEDERATION_VALIDATE_COMMUNITY_TIMER))
 }
 
 main().catch((e) => {