diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt
index 952faad..4182f92 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt
@@ -35,7 +35,9 @@ fun EnterTanDialog(tanChallengeReceived: TanChallengeReceived, onDismiss: () ->
 
     val challenge = tanChallengeReceived.tanChallenge
 
-    val isNotADecoupledTanMethod = !!!challenge.selectedTanMethod.type.isDecoupledMethod
+    val isDecoupledMethod = challenge.selectedTanMethod.type.isDecoupledMethod
+
+    val isNotADecoupledTanMethod = !!!isDecoupledMethod
 
     var tanImageHeight by remember { mutableStateOf(250) }
     val minTanImageHeight = 100
@@ -46,7 +48,7 @@ fun EnterTanDialog(tanChallengeReceived: TanChallengeReceived, onDismiss: () ->
     var enteredTan by remember { mutableStateOf("") }
 
 
-    if (!!!isNotADecoupledTanMethod) {
+    if (isDecoupledMethod) {
         challenge.addUserApprovedDecoupledTanCallback {
             onDismiss()
         }
@@ -65,7 +67,7 @@ fun EnterTanDialog(tanChallengeReceived: TanChallengeReceived, onDismiss: () ->
         useMoreThanPlatformDefaultWidthOnMobile = true,
         confirmButtonTitle = if (isNotADecoupledTanMethod) "OK" else "",
         confirmButtonEnabled = enteredTan.length > 2 && isNotADecoupledTanMethod,
-        showProgressIndicatorOnConfirmButton = !!!isNotADecoupledTanMethod,
+        showProgressIndicatorOnConfirmButton = isDecoupledMethod,
         onConfirm = { confirmCalled() },
         onDismiss = {
             tanChallengeReceived.callback(EnterTanResult(null))