diff --git a/backend/src/graphql/resolver/EmailOptinCodes.test.ts b/backend/src/graphql/resolver/EmailOptinCodes.test.ts
index 640faad17..731d4a395 100644
--- a/backend/src/graphql/resolver/EmailOptinCodes.test.ts
+++ b/backend/src/graphql/resolver/EmailOptinCodes.test.ts
@@ -11,6 +11,8 @@ import { CONFIG } from '@/config'
 import { createUser, setPassword, forgotPassword } from '@/seeds/graphql/mutations'
 import { queryOptIn } from '@/seeds/graphql/queries'
 
+import { createHomeCommunity } from './util/communities'
+
 let mutate: ApolloServerTestClient['mutate'],
   query: ApolloServerTestClient['query'],
   con: Connection
@@ -46,6 +48,7 @@ describe('EmailOptinCodes', () => {
       lastName: 'Lustig',
       language: 'de',
     }
+    await createHomeCommunity()
     const {
       data: { createUser: user },
     } = await mutate({ mutation: createUser, variables })
diff --git a/backend/src/graphql/resolver/UserResolver.test.ts b/backend/src/graphql/resolver/UserResolver.test.ts
index a9c50553e..fd9a85790 100644
--- a/backend/src/graphql/resolver/UserResolver.test.ts
+++ b/backend/src/graphql/resolver/UserResolver.test.ts
@@ -67,6 +67,8 @@ import { stephenHawking } from '@/seeds/users/stephen-hawking'
 import { printTimeDuration } from '@/util/time'
 import { objectValuesToArray } from '@/util/utilities'
 
+import { createHomeCommunity } from './util/communities'
+
 jest.mock('@/emails/sendEmailVariants', () => {
   const originalModule = jest.requireActual('@/emails/sendEmailVariants')
   return {
@@ -125,9 +127,11 @@ describe('UserResolver', () => {
     let result: any
     let emailVerificationCode: string
     let user: User[]
+    let homeCom: DbCommunity
 
     beforeAll(async () => {
       jest.clearAllMocks()
+      homeCom = await createHomeCommunity()
       result = await mutate({ mutation: createUser, variables })
     })
 
@@ -172,7 +176,7 @@ describe('UserResolver', () => {
               referrerId: null,
               contributionLinkId: null,
               passwordEncryptionType: PasswordEncryptionType.NO_PASSWORD,
-              communityUuid: null,
+              communityUuid: homeCom.communityUuid,
               foreign: false,
             },
           ])
@@ -542,6 +546,7 @@ describe('UserResolver', () => {
       let newUser: User
 
       beforeAll(async () => {
+        await createHomeCommunity()
         await mutate({ mutation: createUser, variables: createUserVariables })
         const emailContact = await UserContact.findOneOrFail({
           where: { email: createUserVariables.email },
@@ -586,6 +591,7 @@ describe('UserResolver', () => {
 
     describe('no valid password', () => {
       beforeAll(async () => {
+        await createHomeCommunity()
         await mutate({ mutation: createUser, variables: createUserVariables })
         const emailContact = await UserContact.findOneOrFail({
           where: { email: createUserVariables.email },
diff --git a/backend/src/graphql/resolver/UserResolver.ts b/backend/src/graphql/resolver/UserResolver.ts
index 45ccd720e..1f21abbb9 100644
--- a/backend/src/graphql/resolver/UserResolver.ts
+++ b/backend/src/graphql/resolver/UserResolver.ts
@@ -275,6 +275,10 @@ export class UserResolver {
       { id: 0 } as DbUser,
     )
     let dbUser = new DbUser()
+    const homeCom = await getHomeCommunity()
+    if (homeCom.communityUuid) {
+      dbUser.communityUuid = homeCom.communityUuid
+    }
     dbUser.gradidoID = gradidoID
     dbUser.firstName = firstName
     dbUser.lastName = lastName
diff --git a/backend/src/graphql/resolver/util/communities.ts b/backend/src/graphql/resolver/util/communities.ts
index 0c0023a19..9a271066d 100644
--- a/backend/src/graphql/resolver/util/communities.ts
+++ b/backend/src/graphql/resolver/util/communities.ts
@@ -63,3 +63,23 @@ export async function getCommunity(communityUuid: string): Promise<DbCommunity |
     where: [{ communityUuid }],
   })
 }
+
+export async function createHomeCommunity(): Promise<DbCommunity> {
+  let homeCom: DbCommunity
+  try {
+    return await getHomeCommunity()
+  } catch (err) {
+    homeCom = DbCommunity.create()
+    homeCom.foreign = false
+    homeCom.url = 'http://localhost/api'
+    homeCom.publicKey = Buffer.from('publicKey-HomeCommunity')
+    homeCom.privateKey = Buffer.from('privateKey-HomeCommunity')
+    homeCom.communityUuid = 'HomeCom-UUID'
+    homeCom.authenticatedAt = new Date()
+    homeCom.name = 'HomeCommunity-name'
+    homeCom.description = 'HomeCommunity-description'
+    homeCom.creationDate = new Date()
+    await DbCommunity.insert(homeCom)
+    return homeCom
+  }
+}
diff --git a/backend/src/seeds/factory/user.ts b/backend/src/seeds/factory/user.ts
index 65b0ff3bb..321e9db17 100644
--- a/backend/src/seeds/factory/user.ts
+++ b/backend/src/seeds/factory/user.ts
@@ -5,7 +5,7 @@ import { ApolloServerTestClient } from 'apollo-server-testing'
 
 import { RoleNames } from '@enum/RoleNames'
 
-import { getHomeCommunity } from '@/graphql/resolver/util/communities'
+import { createHomeCommunity, getHomeCommunity } from '@/graphql/resolver/util/communities'
 import { setUserRole } from '@/graphql/resolver/util/modifyUserRole'
 import { createUser, setPassword } from '@/seeds/graphql/mutations'
 import { UserInterface } from '@/seeds/users/UserInterface'
@@ -16,6 +16,8 @@ export const userFactory = async (
 ): Promise<User> => {
   const { mutate } = client
 
+  await createHomeCommunity()
+
   const {
     data: {
       createUser: { id },