diff --git a/HandyControl/Themes/Styles/Base/ContextMenuBaseStyle.xaml b/HandyControl/Themes/Styles/Base/ContextMenuBaseStyle.xaml
index 330158e3..f660e804 100644
--- a/HandyControl/Themes/Styles/Base/ContextMenuBaseStyle.xaml
+++ b/HandyControl/Themes/Styles/Base/ContextMenuBaseStyle.xaml
@@ -108,7 +108,7 @@
                 <Setter Property="Template">
                     <Setter.Value>
                         <ControlTemplate TargetType="MenuItem">
-                            <Border Padding="{TemplateBinding Padding}" x:Name="templateRoot" Height="{TemplateBinding Height}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
+                            <Border Padding="{TemplateBinding Padding}" x:Name="templateRoot" Height="{TemplateBinding Height}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1,1,1,0" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
                                 <Grid>
                                     <Grid.ColumnDefinitions>
                                         <ColumnDefinition Width="Auto"/>