diff --git a/backend/src/util/klicktipp.test.ts b/backend/src/util/klicktipp.test.ts
new file mode 100644
index 000000000..d6416a2f0
--- /dev/null
+++ b/backend/src/util/klicktipp.test.ts
@@ -0,0 +1,87 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+import { Connection } from '@dbTools/typeorm'
+import { Event as DbEvent } from '@entity/Event'
+import { ApolloServerTestClient } from 'apollo-server-testing'
+
+import { testEnvironment, cleanDB, resetToken } from '@test/helpers'
+
+import { addFieldsToSubscriber } from '@/apis/KlicktippController'
+import { creations } from '@/seeds/creation'
+import { creationFactory } from '@/seeds/factory/creation'
+import { userFactory } from '@/seeds/factory/user'
+import { login } from '@/seeds/graphql/mutations'
+import { bibiBloxberg } from '@/seeds/users/bibi-bloxberg'
+import { peterLustig } from '@/seeds/users/peter-lustig'
+import { connection } from '@/typeorm/connection'
+
+import { exportEventDataToKlickTipp } from './klicktipp'
+
+jest.mock('@/apis/KlicktippController', () => {
+  const originalModule = jest.requireActual('@/apis/KlicktippController')
+  return {
+    __esModule: true,
+    ...originalModule,
+    getKlickTippUser: jest.fn((email) => originalModule.getKlickTippUser(email)),
+    addFieldsToSubscriber: jest.fn((email, a) => originalModule.addFieldsToSubscriber(email, a)),
+  }
+})
+
+// jest.mock('@/typeorm/connection', () => {
+//   const originalModule = jest.requireActual('@/typeorm/connection')
+//   return {
+//     __esModule: true,
+//     ...originalModule,
+//     connection: jest.fn(() => Promise.resolve(con)),
+//   }
+// })
+
+let mutate: ApolloServerTestClient['mutate'],
+  query: ApolloServerTestClient['query'],
+  con: Connection
+let testEnv: {
+  mutate: ApolloServerTestClient['mutate']
+  query: ApolloServerTestClient['query']
+  con: Connection
+}
+
+beforeAll(async () => {
+  testEnv = await testEnvironment()
+  mutate = testEnv.mutate
+  query = testEnv.query
+  con = testEnv.con
+  await DbEvent.clear()
+})
+
+afterAll(async () => {
+  await cleanDB()
+  await con.close()
+})
+
+describe('klicktipp', () => {
+  beforeAll(async () => {
+    await userFactory(testEnv, bibiBloxberg)
+    await userFactory(testEnv, peterLustig)
+    const bibisCreation = creations.find((creation) => creation.email === 'bibi@bloxberg.de')
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    await creationFactory(testEnv, bibisCreation!)
+    await mutate({
+      mutation: login,
+      variables: { email: 'bibi@bloxberg.de', password: 'Aa12345_' },
+    })
+    await con.close()
+    void exportEventDataToKlickTipp()
+  })
+
+  afterAll(() => {
+    resetToken()
+  })
+
+  describe('exportEventDataToKlickTipp', () => {
+    it('calls the KlicktippController', () => {
+      expect(addFieldsToSubscriber).toBeCalled()
+    })
+  })
+})
diff --git a/backend/src/util/klicktipp.ts b/backend/src/util/klicktipp.ts
index a315d73e6..7070de411 100644
--- a/backend/src/util/klicktipp.ts
+++ b/backend/src/util/klicktipp.ts
@@ -1,4 +1,5 @@
 // eslint-disable @typescript-eslint/no-explicit-any
+import { Connection } from '@dbTools/typeorm'
 import { User } from '@entity/User'
 
 import { getKlickTippUser, addFieldsToSubscriber } from '@/apis/KlicktippController'
@@ -39,6 +40,10 @@ async function klickTippSendFieldToUser(
   }
 }
 
+function getMyConnection(): Promise<Connection | null> {
+  return connection()
+}
+
 export async function exportEventDataToKlickTipp(): Promise<void> {
   const connectionInstance = await getConnection()
   if (!connectionInstance) {
@@ -46,22 +51,24 @@ export async function exportEventDataToKlickTipp(): Promise<void> {
   }
 
   const lastLoginEvents = await lastDateTimeEvents(EventType.USER_LOGIN)
-  void klickTippSendFieldToUser(lastLoginEvents, 'field186060')
+  await klickTippSendFieldToUser(lastLoginEvents, 'field186060')
 
   const registeredEvents = await lastDateTimeEvents(EventType.USER_ACTIVATE_ACCOUNT)
-  void klickTippSendFieldToUser(registeredEvents, 'field186061')
+  await klickTippSendFieldToUser(registeredEvents, 'field186061')
 
   const receiveTransactionEvents = await lastDateTimeEvents(EventType.TRANSACTION_RECEIVE)
-  void klickTippSendFieldToUser(receiveTransactionEvents, 'field185674')
+  await klickTippSendFieldToUser(receiveTransactionEvents, 'field185674')
 
   const contributionCreateEvents = await lastDateTimeEvents(EventType.TRANSACTION_SEND)
-  void klickTippSendFieldToUser(contributionCreateEvents, 'field185673')
+  await klickTippSendFieldToUser(contributionCreateEvents, 'field185673')
 
   const linkRedeemedEvents = await lastDateTimeEvents(EventType.TRANSACTION_LINK_REDEEM)
-  void klickTippSendFieldToUser(linkRedeemedEvents, 'field185676')
+  await klickTippSendFieldToUser(linkRedeemedEvents, 'field185676')
 
   const confirmContributionEvents = await lastDateTimeEvents(EventType.ADMIN_CONTRIBUTION_CONFIRM)
-  void klickTippSendFieldToUser(confirmContributionEvents, 'field185675')
+  await klickTippSendFieldToUser(confirmContributionEvents, 'field185675')
+
+  await connectionInstance.close()
 }
 void exportEventDataToKlickTipp()
 // void retrieveNotRegisteredEmails()