diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 784dea175..0053e8d12 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -33,7 +33,7 @@
 
   <!-- Properties for test projects -->
   <Choose>
-    <When Condition="!$(MSBuildProjectName.EndsWith('.Tests'))">
+    <When Condition="$(MSBuildProjectName.EndsWith('.Tests'))">
       <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.5.8">