diff --git a/FinTs4jBankingClient/src/commonTest/kotlin/net/codinux/banking/client/fints4k/FinTs4kBankingClientTest.kt b/FinTs4jBankingClient/src/commonTest/kotlin/net/codinux/banking/client/fints4k/FinTs4kBankingClientTest.kt
index af6b4b2b..093df9e1 100644
--- a/FinTs4jBankingClient/src/commonTest/kotlin/net/codinux/banking/client/fints4k/FinTs4kBankingClientTest.kt
+++ b/FinTs4jBankingClient/src/commonTest/kotlin/net/codinux/banking/client/fints4k/FinTs4kBankingClientTest.kt
@@ -3,6 +3,7 @@ package net.codinux.banking.client.fints4k
 import kotlinx.coroutines.test.runTest
 import net.codinux.banking.client.SimpleBankingClientCallback
 import net.codinux.banking.client.model.response.ResponseType
+import net.codinux.banking.client.model.tan.EnterTanResult
 import kotlin.test.*
 
 @Ignore
@@ -18,7 +19,10 @@ class FinTs4kBankingClientTest {
 
 
     private val underTest = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback ->
+        println("WARN: TAN is required to execute test: ${tanChallenge.messageToShowToUser}")
 
+        val enteredTan: String? = null
+        callback(EnterTanResult(enteredTan))
     })