diff --git a/src/Windows/Avalonia.Win32/WindowImpl.cs b/src/Windows/Avalonia.Win32/WindowImpl.cs
index e242c7b247..2f4183b8fc 100644
--- a/src/Windows/Avalonia.Win32/WindowImpl.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.cs
@@ -527,6 +527,7 @@ namespace Avalonia.Win32
             }
 
             _framebuffer.Dispose();
+            _hiddenWindow?.Dispose();
         }
 
         public void Invalidate(Rect rect)