diff --git a/src/Consolonia.Themes/Templates/Controls/MenuItem.axaml b/src/Consolonia.Themes/Templates/Controls/MenuItem.axaml
index 6f5f7f82..97a091ea 100644
--- a/src/Consolonia.Themes/Templates/Controls/MenuItem.axaml
+++ b/src/Consolonia.Themes/Templates/Controls/MenuItem.axaml
@@ -1,6 +1,5 @@
 <ResourceDictionary xmlns="https://github.com/avaloniaui"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-                    xmlns:sys="clr-namespace:System;assembly=netstandard"
                     xmlns:helpers="clr-namespace:Consolonia.Themes.Templates.Controls.Helpers;assembly=Consolonia.Themes"
                     xmlns:converters="clr-namespace:Avalonia.Controls.Converters;assembly=Avalonia.Controls">