diff --git a/Flow.Launcher/Converters/OpenResultHotkeyVisibilityConverter.cs b/Flow.Launcher/Converters/OpenResultHotkeyVisibilityConverter.cs
index 7ab13190a..b031dc41c 100644
--- a/Flow.Launcher/Converters/OpenResultHotkeyVisibilityConverter.cs
+++ b/Flow.Launcher/Converters/OpenResultHotkeyVisibilityConverter.cs
@@ -17,7 +17,17 @@ public class OpenResultHotkeyVisibilityConverter : IValueConverter
 
         if (value is ListBoxItem listBoxItem
             && ItemsControl.ItemsControlFromItemContainer(listBoxItem) is ListBox listBox)
-            number = listBox.ItemContainerGenerator.IndexFromContainer(listBoxItem) + 1;
+        {
+            var dataItem = listBoxItem.DataContext;
+            if (dataItem != null)
+            {
+                var index = listBox.Items.IndexOf(dataItem);
+                if (index >= 0)
+                {
+                    number = index + 1;
+                }
+            }
+        }
 
         return number <= MaxVisibleHotkeys ? Visibility.Visible : Visibility.Collapsed;
     }
diff --git a/Flow.Launcher/Converters/OrdinalConverter.cs b/Flow.Launcher/Converters/OrdinalConverter.cs
index 9aed2e07b..c07f46a1c 100644
--- a/Flow.Launcher/Converters/OrdinalConverter.cs
+++ b/Flow.Launcher/Converters/OrdinalConverter.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Globalization;
 using System.Windows.Controls;
 using System.Windows.Data;
@@ -15,9 +15,20 @@ public class OrdinalConverter : IValueConverter
             return 0;
         }
 
-        var res = listBox.ItemContainerGenerator.IndexFromContainer(listBoxItem) + 1;
-        return res == 10 ? 0 : res;  // 10th item => HOTKEY+0
+        var dataItem = listBoxItem.DataContext;
+        if (dataItem == null)
+        {
+            return 0;
+        }
 
+        var index = listBox.Items.IndexOf(dataItem);
+        if (index < 0)
+        {
+            return 0;
+        }
+
+        var res = index + 1;
+        return res == 10 ? 0 : res;  // 10th item => HOTKEY+0
     }
 
     public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) => throw new InvalidOperationException();
diff --git a/Flow.Launcher/ResultListBox.xaml b/Flow.Launcher/ResultListBox.xaml
index 825d92d18..e8e5d8d21 100644
--- a/Flow.Launcher/ResultListBox.xaml
+++ b/Flow.Launcher/ResultListBox.xaml
@@ -82,7 +82,7 @@
                                     <TextBlock.Text>
                                         <MultiBinding StringFormat="{}{0}+{1}">
                                             <Binding Mode="OneWay" Path="Settings.OpenResultModifiers" />
-                                            <Binding Converter="{StaticResource ResourceKey=OrdinalConverter}" RelativeSource="{RelativeSource Mode=FindAncestor, AncestorType=ListBoxItem}" />
+                                            <Binding Converter="{StaticResource ResourceKey=OrdinalConverter}" RelativeSource="{RelativeSource Mode=FindAncestor, AncestorType=ListBoxItem}"/>
                                         </MultiBinding>
                                     </TextBlock.Text>
                                 </TextBlock>