diff --git a/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/Customer.kt b/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/Customer.kt
index 911f25b6..264073d8 100644
--- a/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/Customer.kt
+++ b/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/Customer.kt
@@ -12,8 +12,8 @@ import net.dankito.utils.multiplatform.UUID
 
 //@JsonIdentityInfo(property = "technicalId", generator = ObjectIdGenerators.PropertyGenerator::class) // to avoid stack overflow due to circular references
 open class Customer(
-    open val bankCode: String,
-    open val customerId: String,
+    open var bankCode: String,
+    open var customerId: String,
     open var password: String,
     open var finTsServerAddress: String,
     open var bankName: String,