diff --git a/src/Resources/Styles/CheckBox.xaml b/src/Resources/Styles/CheckBox.xaml
index 0696cece..523a8867 100644
--- a/src/Resources/Styles/CheckBox.xaml
+++ b/src/Resources/Styles/CheckBox.xaml
@@ -1,4 +1,4 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 
     <Style TargetType="{x:Type CheckBox}">
@@ -30,6 +30,10 @@
                         <Trigger Property="IsMouseOver" Value="True">
                             <Setter TargetName="Border" Property="BorderBrush" Value="{DynamicResource Brush.Accent1}"/>
                         </Trigger>
+
+                        <Trigger Property="IsEnabled" Value="False">
+                            <Setter Property="Opacity" Value=".5"/>
+                        </Trigger>
                     </ControlTemplate.Triggers>
                 </ControlTemplate>
             </Setter.Value>