diff --git a/tests/Avalonia.Controls.UnitTests/ImageTests.cs b/tests/Avalonia.Controls.UnitTests/ImageTests.cs
index 5102085fbf..d3c0e29eca 100644
--- a/tests/Avalonia.Controls.UnitTests/ImageTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/ImageTests.cs
@@ -169,7 +169,7 @@ namespace Avalonia.Controls.UnitTests
 
         private IBitmap CreateBitmap(int width, int height)
         {
-            return Mock.Of<IBitmap>(x => x.PixelSize == new PixelSize(width, height));
+            return Mock.Of<IBitmap>(x => x.Size == new Size(width, height));
         }
     }
 }