diff --git a/BankingClientModel/src/commonMain/kotlin/net/codinux/banking/client/model/AccountCredentials.kt b/BankingClientModel/src/commonMain/kotlin/net/codinux/banking/client/model/AccountCredentials.kt
index df6e11c1..5afed2e9 100644
--- a/BankingClientModel/src/commonMain/kotlin/net/codinux/banking/client/model/AccountCredentials.kt
+++ b/BankingClientModel/src/commonMain/kotlin/net/codinux/banking/client/model/AccountCredentials.kt
@@ -4,9 +4,9 @@ import net.codinux.banking.client.model.config.NoArgConstructor
 
 @NoArgConstructor
 open class AccountCredentials(
-    var bankCode: String,
-    var loginName: String,
-    var password: String
+    val bankCode: String,
+    val loginName: String,
+    val password: String
 ) {
     override fun toString() = "$bankCode $loginName"
 }
\ No newline at end of file