diff --git a/OpenNest/Controls/FileListControl.cs b/OpenNest/Controls/FileListControl.cs
index 3f7bb31..6a0cf2e 100644
--- a/OpenNest/Controls/FileListControl.cs
+++ b/OpenNest/Controls/FileListControl.cs
@@ -63,7 +63,11 @@ namespace OpenNest.Controls
         public void AddItem(FileListItem item)
         {
             items.Add(item);
-            if (items.Count == 1) selectedIndex = 0;
+            if (items.Count == 1)
+            {
+                selectedIndex = 0;
+                SelectedIndexChanged?.Invoke(this, selectedIndex);
+            }
             Invalidate();
         }
 
diff --git a/OpenNest/Forms/CadConverterForm.cs b/OpenNest/Forms/CadConverterForm.cs
index 58d7f0e..f942b89 100644
--- a/OpenNest/Forms/CadConverterForm.cs
+++ b/OpenNest/Forms/CadConverterForm.cs
@@ -194,8 +194,10 @@ namespace OpenNest.Forms
         private void OnQuantityChanged(object sender, EventArgs e)
         {
             var item = CurrentItem;
-            if (item != null)
-                item.Quantity = (int)numQuantity.Value;
+            if (item == null) return;
+
+            item.Quantity = (int)numQuantity.Value;
+            fileList.Invalidate();
         }
 
         private void OnCustomerChanged(object sender, EventArgs e)