diff --git a/lib/view_model/exchange/exchange_view_model.dart b/lib/view_model/exchange/exchange_view_model.dart
index 1b14980dd..8c001260c 100644
--- a/lib/view_model/exchange/exchange_view_model.dart
+++ b/lib/view_model/exchange/exchange_view_model.dart
@@ -174,7 +174,7 @@ abstract class ExchangeViewModelBase with Store {
       return;
     }
 
-    final _amount = double.parse(amount.replaceAll(',', '.'));
+    final _amount = double.parse(amount.replaceAll(',', '.')) ?? 0;
     provider
         .calculateAmount(
             from: depositCurrency,