diff --git a/src/libraries/Microsoft.Extensions.DependencyInjection.Specification.Tests/src/Microsoft.Extensions.DependencyInjection.Specification.Tests.csproj b/src/libraries/Microsoft.Extensions.DependencyInjection.Specification.Tests/src/Microsoft.Extensions.DependencyInjection.Specification.Tests.csproj
index d0d6ea2f289cce..7cfacea920c7dd 100644
--- a/src/libraries/Microsoft.Extensions.DependencyInjection.Specification.Tests/src/Microsoft.Extensions.DependencyInjection.Specification.Tests.csproj
+++ b/src/libraries/Microsoft.Extensions.DependencyInjection.Specification.Tests/src/Microsoft.Extensions.DependencyInjection.Specification.Tests.csproj
@@ -5,6 +5,7 @@
     <EnableDefaultItems>true</EnableDefaultItems>
     <CLSCompliant>false</CLSCompliant>
     <IsPackable>true</IsPackable>
+    <IsRuntimeAssembly>false</IsRuntimeAssembly>
     <TargetsForTfmSpecificBuildOutput>$(TargetsForTfmSpecificBuildOutput);IncludeProjectReferencesInPackage</TargetsForTfmSpecificBuildOutput>
     <PackageDescription>Suite of xUnit.net tests to check for container compatibility with Microsoft.Extensions.DependencyInjection.</PackageDescription>
   </PropertyGroup>