diff --git a/HandyControl/Themes/Styles/Base/ToggleButtonBaseStyle.xaml b/HandyControl/Themes/Styles/Base/ToggleButtonBaseStyle.xaml
index be7bdfdb..bc3e45fb 100644
--- a/HandyControl/Themes/Styles/Base/ToggleButtonBaseStyle.xaml
+++ b/HandyControl/Themes/Styles/Base/ToggleButtonBaseStyle.xaml
@@ -122,7 +122,7 @@
                             <ColumnDefinition Width="*"/>
                         </Grid.ColumnDefinitions>
                         <Border Height="22" Width="36" x:Name="backBorder" Background="{DynamicResource BorderBrush}" CornerRadius="11"/>
-                        <Border Grid.Column="0" Height="22" Width="36" x:Name="lightBorder" Background="{DynamicResource PrimaryBrush}" CornerRadius="11" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"/>
+                        <Border Grid.Column="0" Height="22" Width="36" Opacity="0" x:Name="lightBorder" Background="{DynamicResource PrimaryBrush}" CornerRadius="11" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"/>
                         <Border Grid.Column="0" Margin="1" Background="{TemplateBinding Background}" CornerRadius="11" Name="innerBorder" RenderTransformOrigin=".8,0.5">
                             <Border.RenderTransform>
                                 <TransformGroup>