diff --git a/src/Views/Preference.axaml b/src/Views/Preference.axaml
index a75eece1..46279470 100644
--- a/src/Views/Preference.axaml
+++ b/src/Views/Preference.axaml
@@ -438,7 +438,7 @@
                      Height="28"
                      CornerRadius="3"
                      Text="{Binding #me.GPGExecutableFile, Mode=TwoWay}"
-                     IsEnabled="{Binding #me.GPGFormat, Converter={StaticResource EnumToBoolConverter}, ConverterParameter={x:Static m:GPGFormat.OPENPGP}}">
+                     IsEnabled="{Binding #me.GPGFormat, Mode=TwoWay, Converter={StaticResource EnumToBoolConverter}, ConverterParameter={x:Static m:GPGFormat.OPENPGP}}">
               <TextBox.InnerRightContent>
                 <Button Classes="icon_button" Width="30" Height="30" Click="SelectGPGExecutable">
                   <Path Data="{StaticResource Icons.Folder.Open}" Fill="{DynamicResource Brush.FG1}"/>
diff --git a/src/Views/Preference.axaml.cs b/src/Views/Preference.axaml.cs
index 8474382e..9f4a11f9 100644
--- a/src/Views/Preference.axaml.cs
+++ b/src/Views/Preference.axaml.cs
@@ -66,10 +66,13 @@ namespace SourceGit.Views
             set;
         }
 
+        public static readonly StyledProperty<Models.GPGFormat> GPGFormatProperty =
+            AvaloniaProperty.Register<Preference, Models.GPGFormat>(nameof(GPGFormat));
+
         public Models.GPGFormat GPGFormat
         {
-            get;
-            set;
+            get => GetValue(GPGFormatProperty);
+            set => SetValue(GPGFormatProperty, value);
         }
 
         public static readonly StyledProperty<string> GPGExecutableFileProperty =