diff --git a/src/Avalonia.Native/GlPlatformFeature.cs b/src/Avalonia.Native/GlPlatformFeature.cs
index dbcdd244cd..97785e4a81 100644
--- a/src/Avalonia.Native/GlPlatformFeature.cs
+++ b/src/Avalonia.Native/GlPlatformFeature.cs
@@ -100,12 +100,12 @@ namespace Avalonia.Native
 
         public IGlDisplay Display { get; }
 
-        public System.Drawing.Size PixelSize
+        public PixelSize Size
         {
             get
             {
                 var s = _session.GetPixelSize();
-                return new System.Drawing.Size(s.Width, s.Height);
+                return new PixelSize(s.Width, s.Height);
             }
         }
 
diff --git a/src/Avalonia.OpenGL/EglGlPlatformSurface.cs b/src/Avalonia.OpenGL/EglGlPlatformSurface.cs
index 19894e4ec5..c99c869c4f 100644
--- a/src/Avalonia.OpenGL/EglGlPlatformSurface.cs
+++ b/src/Avalonia.OpenGL/EglGlPlatformSurface.cs
@@ -7,8 +7,7 @@ namespace Avalonia.OpenGL
         public interface IEglWindowGlPlatformSurfaceInfo
         {
             IntPtr Handle { get; }
-            // TODO: Change to PixelSize struct once https://github.com/AvaloniaUI/Avalonia/pull/1889 is merged
-            System.Drawing.Size PixelSize { get; }
+            PixelSize Size { get; }
             double Scaling { get; }
         }
 
@@ -71,7 +70,7 @@ namespace Avalonia.OpenGL
                 }
 
                 public IGlDisplay Display => _context.Display;
-                public System.Drawing.Size PixelSize => _info.PixelSize;
+                public PixelSize Size => _info.Size;
                 public double Scaling => _info.Scaling;
             }
         }
diff --git a/src/Avalonia.OpenGL/IGlPlatformSurfaceRenderingSession.cs b/src/Avalonia.OpenGL/IGlPlatformSurfaceRenderingSession.cs
index 22641d7b53..4b0de05b77 100644
--- a/src/Avalonia.OpenGL/IGlPlatformSurfaceRenderingSession.cs
+++ b/src/Avalonia.OpenGL/IGlPlatformSurfaceRenderingSession.cs
@@ -5,8 +5,7 @@ namespace Avalonia.OpenGL
     public interface IGlPlatformSurfaceRenderingSession : IDisposable
     {
         IGlDisplay Display { get; }
-        // TODO: Change to PixelSize struct once https://github.com/AvaloniaUI/Avalonia/pull/1889 is merged
-        System.Drawing.Size PixelSize { get; }
+        PixelSize Size { get; }
         double Scaling { get; }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs b/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
index 6e8cf5cb18..0273f6a7d8 100644
--- a/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
+++ b/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
@@ -510,12 +510,12 @@ namespace Avalonia.Gtk3
                 : new ImmediateRenderer(root);
         }
 
-        System.Drawing.Size EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo.PixelSize
+        PixelSize EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo.Size
         {
             get
             {
                 var cs = ClientSize;
-                return new System.Drawing.Size((int)Math.Max(1, LastKnownScaleFactor * cs.Width),
+                return new PixelSize((int)Math.Max(1, LastKnownScaleFactor * cs.Width),
                     (int)Math.Max(1, LastKnownScaleFactor * ClientSize.Height));
             }
         }
diff --git a/src/Skia/Avalonia.Skia/GlRenderTarget.cs b/src/Skia/Avalonia.Skia/GlRenderTarget.cs
index 0435e1060a..a6269473a6 100644
--- a/src/Skia/Avalonia.Skia/GlRenderTarget.cs
+++ b/src/Skia/Avalonia.Skia/GlRenderTarget.cs
@@ -28,7 +28,7 @@ namespace Avalonia.Skia
             var gl = disp.GlInterface;
             gl.GetIntegerv(GL_FRAMEBUFFER_BINDING, out var fb);
 
-            var size = session.PixelSize;
+            var size = session.Size;
             var scaling = session.Scaling;
 
             GRBackendRenderTargetDesc desc = new GRBackendRenderTargetDesc
diff --git a/src/Windows/Avalonia.Win32/WindowImpl.cs b/src/Windows/Avalonia.Win32/WindowImpl.cs
index d78c213299..21986bd2ba 100644
--- a/src/Windows/Avalonia.Win32/WindowImpl.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.cs
@@ -933,14 +933,14 @@ namespace Avalonia.Win32
 
             _topmost = value;
         }
-        
-        System.Drawing.Size EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo.PixelSize
+
+        PixelSize EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo.Size
         {
             get
             {
                 RECT rect;
                 GetClientRect(_hwnd, out rect);
-                return new System.Drawing.Size(
+                return new PixelSize(
                     Math.Max(1, rect.right - rect.left),
                     Math.Max(1, rect.bottom - rect.top));
             }