diff --git a/src/Avalonia.Controls/PullToRefresh/RefreshInfoProvider.cs b/src/Avalonia.Controls/PullToRefresh/RefreshInfoProvider.cs
index 847f011fa9..d2667b6198 100644
--- a/src/Avalonia.Controls/PullToRefresh/RefreshInfoProvider.cs
+++ b/src/Avalonia.Controls/PullToRefresh/RefreshInfoProvider.cs
@@ -17,16 +17,16 @@ namespace Avalonia.Controls.PullToRefresh
         private double _interactionRatio;
         private bool _entered;
 
-        public DirectProperty<RefreshInfoProvider, bool> IsInteractingForRefreshProperty =
+        public static readonly  DirectProperty<RefreshInfoProvider, bool> IsInteractingForRefreshProperty =
             AvaloniaProperty.RegisterDirect<RefreshInfoProvider, bool>(nameof(IsInteractingForRefresh),
                 s => s.IsInteractingForRefresh, (s, o) => s.IsInteractingForRefresh = o);
 
 
-        public DirectProperty<RefreshInfoProvider, double> ExecutionRatioProperty =
+        public static readonly DirectProperty<RefreshInfoProvider, double> ExecutionRatioProperty =
             AvaloniaProperty.RegisterDirect<RefreshInfoProvider, double>(nameof(ExecutionRatio),
                 s => s.ExecutionRatio);
 
-        public DirectProperty<RefreshInfoProvider, double> InteractionRatioProperty =
+        public static readonly DirectProperty<RefreshInfoProvider, double> InteractionRatioProperty =
             AvaloniaProperty.RegisterDirect<RefreshInfoProvider, double>(nameof(InteractionRatio),
                 s => s.InteractionRatio, (s, o) => s.InteractionRatio = o);
 
diff --git a/src/Avalonia.Controls/PullToRefresh/RefreshVisualizer.cs b/src/Avalonia.Controls/PullToRefresh/RefreshVisualizer.cs
index d2a35bb6aa..8dc19eb1d4 100644
--- a/src/Avalonia.Controls/PullToRefresh/RefreshVisualizer.cs
+++ b/src/Avalonia.Controls/PullToRefresh/RefreshVisualizer.cs
@@ -64,7 +64,7 @@ namespace Avalonia.Controls
         /// <summary>
         /// Defines the <see cref="RefreshInfoProvider"/> property.
         /// </summary>
-        internal DirectProperty<RefreshVisualizer, RefreshInfoProvider?> RefreshInfoProviderProperty =
+        internal static readonly DirectProperty<RefreshVisualizer, RefreshInfoProvider?> RefreshInfoProviderProperty =
             AvaloniaProperty.RegisterDirect<RefreshVisualizer, RefreshInfoProvider?>(nameof(RefreshInfoProvider),
                 s => s.RefreshInfoProvider, (s, o) => s.RefreshInfoProvider = o);