diff --git a/tests/Avalonia.Layout.UnitTests/Properties/AssemblyInfo.cs b/tests/Avalonia.Layout.UnitTests/Properties/AssemblyInfo.cs
index a4f0c4c341..b0d07f81f1 100644
--- a/tests/Avalonia.Layout.UnitTests/Properties/AssemblyInfo.cs
+++ b/tests/Avalonia.Layout.UnitTests/Properties/AssemblyInfo.cs
@@ -2,6 +2,7 @@
 // Licensed under the MIT license. See licence.md file in the project root for full license information.
 
 using System.Reflection;
+using Xunit;
 
 [assembly: AssemblyTitle("Avalonia.Layout.UnitTests")]