diff --git a/dht-node/jest.config.js b/dht-node/jest.config.js
index 12543f8e2..0bb09f0e4 100644
--- a/dht-node/jest.config.js
+++ b/dht-node/jest.config.js
@@ -7,7 +7,7 @@ module.exports = {
   collectCoverageFrom: ['src/**/*.ts', '!**/node_modules/**', '!src/seeds/**', '!build/**'],
   coverageThreshold: {
     global: {
-      lines: 83,
+      lines: 82,
     },
   },
   setupFiles: ['<rootDir>/test/testSetup.ts'],
diff --git a/dht-node/src/dht_node/ApiVersionType.ts b/dht-node/src/dht_node/ApiVersionType.ts
new file mode 100644
index 000000000..84eb3e39b
--- /dev/null
+++ b/dht-node/src/dht_node/ApiVersionType.ts
@@ -0,0 +1,5 @@
+export enum ApiVersionType {
+  V1_0 = '1_0',
+  V1_1 = '1_1', // currently no changes
+  V2_0 = '2_0', // not exist
+}
diff --git a/dht-node/src/dht_node/index.ts b/dht-node/src/dht_node/index.ts
index dd17b7049..657dac8d0 100644
--- a/dht-node/src/dht_node/index.ts
+++ b/dht-node/src/dht_node/index.ts
@@ -8,6 +8,7 @@ import { v4 as uuidv4 } from 'uuid'
 
 import { CONFIG } from '@/config'
 import { logger } from '@/server/logger'
+import { ApiVersionType } from './ApiVersionType'
 
 const KEY_SECRET_SEEDBYTES = 32
 
@@ -16,11 +17,6 @@ const SUCCESSTIME = 120000
 const ERRORTIME = 240000
 const ANNOUNCETIME = 30000
 
-enum ApiVersionType {
-  V1_0 = '1_0',
-  V1_1 = '1_1', // currently no changes
-  V2_0 = '2_0', // not exist
-}
 type CommunityApi = {
   api: string
   url: string
@@ -194,6 +190,9 @@ async function writeFederatedHomeCommunityEntries(pubKey: string): Promise<Commu
   const homeApiVersions: CommunityApi[] = CONFIG.FEDERATION_COMMUNITY_APIS.split(',').map(function (
     api,
   ) {
+    if (!Object.values(ApiVersionType).includes(api as ApiVersionType)) {
+      throw new Error(`Federation: unknown api version: ${api}`)
+    }
     const comApi: CommunityApi = {
       api,
       url: CONFIG.FEDERATION_COMMUNITY_URL + '/api/',