diff --git a/src/Avalonia.Base/Data/Converters/ObjectConverters.cs b/src/Avalonia.Base/Data/Converters/ObjectConverters.cs
index 8496ee1ae6..bfec53c3f6 100644
--- a/src/Avalonia.Base/Data/Converters/ObjectConverters.cs
+++ b/src/Avalonia.Base/Data/Converters/ObjectConverters.cs
@@ -1,3 +1,6 @@
+using System.Linq;
+using System.Collections.Generic;
+
namespace Avalonia.Data.Converters
{
///
@@ -28,5 +31,52 @@ namespace Avalonia.Data.Converters
///
public static readonly IValueConverter NotEqual =
new FuncValueConverter