diff --git a/lib/screens/return.dart b/lib/screens/return.dart
index 77fede4..cd89dd6 100644
--- a/lib/screens/return.dart
+++ b/lib/screens/return.dart
@@ -134,14 +134,28 @@ class _ReturnScreenState<T> extends BaseState<ReturnScreen> {
     }
   }
 
+  num extractReturnPoints(Map purchase) {
+    final returnPoints = purchase['sum_bonus'];
+    if(returnPoints is num) {
+      return returnPoints;
+    } else if(returnPoints is String) {
+      final RegExp returnPattern = RegExp(r"(\d+)");
+      final List<Match> digits = returnPattern.allMatches(returnPoints).toList();
+      return int.parse(digits[0].group(0)) - int.parse(digits[1].group(1));
+    } else {
+      return 0;
+    }
+  }
+
   void _confirmReturnPurchase(Map purchase, String formattedDate) {
+    final num totalReturn = extractReturnPoints(purchase);
     showDialog(
       context: context,
       builder: (context) =>
         AlertDialog(
           title: Text(StringsLocalization.confirmation()),
           content: Text(StringsLocalization.returnConfirmation(
-            purchase['sum_total'], formattedDate, _bonus - purchase['sum_bonus'])),
+            purchase['sum_total'], formattedDate, _bonus - totalReturn)),
           actions: <Widget>[
             FlatButton(
               child: Text(StringsLocalization.no()),
@@ -151,7 +165,7 @@ class _ReturnScreenState<T> extends BaseState<ReturnScreen> {
               child: Text(StringsLocalization.yes()),
               onPressed: () {
                 Navigator.pop(context);
-                _returnPurchase(purchase, formattedDate);
+                _returnPurchase(purchase, formattedDate, totalReturn);
               }
             )
           ],
@@ -159,11 +173,11 @@ class _ReturnScreenState<T> extends BaseState<ReturnScreen> {
     );
   }
 
-  void _returnPurchase(Map purchase, String formattedDate) async {
+  void _returnPurchase(Map purchase, String formattedDate, num totalReturn) async {
     String token = await helper.getToken();
     final Response response = await returnPurchase(token, widget.userId, purchase['id']);
     if(response.statusCode == 204) {
-      _bonus += purchase['sum_bonus'];
+      _bonus += totalReturn;
       setState(() {
         _purchases.removeWhere((p) => p['id'] == purchase['id']);
       });