diff --git a/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Controls/ControlStyles.xaml b/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Controls/ControlStyles.xaml
index 7183b558c4..77ed2ad5cc 100644
--- a/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Controls/ControlStyles.xaml
+++ b/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Controls/ControlStyles.xaml
@@ -117,7 +117,7 @@
 		<Setter Property="Template">
 			<Setter.Value>
 				<ControlTemplate TargetType="{x:Type Controls:WindowClone}">
-					<Border Background="{DynamicResource {x:Static SystemColors.GradientActiveCaptionBrushKey}}" BorderBrush="{DynamicResource {x:Static SystemColors.WindowFrameBrushKey}}" BorderThickness="1,1,1,1" CornerRadius="5,5,5,5">
+					<Border Background="{DynamicResource {x:Static SystemColors.GradientActiveCaptionBrushKey}}" BorderBrush="{DynamicResource {x:Static SystemColors.WindowFrameBrushKey}}" BorderThickness="1,1,1,1">
 						<DockPanel Margin="4,0,4,4">
 							<DockPanel Height="26" DockPanel.Dock="Top">
 								<Image Width="16" Height="16" Margin="1,0,0,0" Source="{TemplateBinding Window.Icon}" />