diff --git a/lib/inventree/stock.dart b/lib/inventree/stock.dart
index 0de430ae..8b2f1ec7 100644
--- a/lib/inventree/stock.dart
+++ b/lib/inventree/stock.dart
@@ -104,10 +104,10 @@ class InvenTreeStockItemHistory extends InvenTreeModel {
 
     // Serial number takes priority here
     if (deltas.containsKey("serial")) {
-      var serial = (deltas["serial"] ?? "").toString() as String;
+      var serial = (deltas["serial"] ?? "") as String;
       return "# ${serial}";
     } else if (deltas.containsKey("quantity")) {
-      double q = (deltas["quantity"] ?? 0);
+      double q = (deltas["quantity"] ?? 0) as double;
 
       return simpleNumberString(q);
     } else {
diff --git a/lib/widget/stock_item_history.dart b/lib/widget/stock_item_history.dart
index 7cfb260f..f4c5afe3 100644
--- a/lib/widget/stock_item_history.dart
+++ b/lib/widget/stock_item_history.dart
@@ -1,12 +1,12 @@
 
 
-import 'package:flutter/cupertino.dart';
-import 'package:flutter/material.dart';
+import "package:flutter/cupertino.dart";
+import "package:flutter/material.dart";
 
-import 'package:inventree/widget/refreshable_state.dart';
-import 'package:inventree/l10.dart';
-import 'package:inventree/inventree/stock.dart';
-import 'package:inventree/inventree/model.dart';
+import "package:inventree/widget/refreshable_state.dart";
+import "package:inventree/l10.dart";
+import "package:inventree/inventree/stock.dart";
+import "package:inventree/inventree/model.dart";
 
 
 class StockItemHistoryWidget extends StatefulWidget {