diff --git a/src/Cli/dotnet/ToolPackage/ToolPackageDownloaderBase.cs b/src/Cli/dotnet/ToolPackage/ToolPackageDownloaderBase.cs
index cacfcc3157a2..8009102003c3 100644
--- a/src/Cli/dotnet/ToolPackage/ToolPackageDownloaderBase.cs
+++ b/src/Cli/dotnet/ToolPackage/ToolPackageDownloaderBase.cs
@@ -57,7 +57,7 @@ protected ToolPackageDownloaderBase(
         _currentWorkingDirectory = currentWorkingDirectory;
 
         _localToolAssetDir = new DirectoryPath(_fileSystem.Directory.CreateTemporarySubdirectory());
-        _runtimeJsonPath = runtimeJsonPathForTests ?? Path.Combine(AppContext.BaseDirectory!, "RuntimeIdentifierGraph.json");
+        _runtimeJsonPath = runtimeJsonPathForTests ?? Path.Combine(AppContext.BaseDirectory!, "PortableRuntimeIdentifierGraph.json");
     }
 
     protected abstract INuGetPackageDownloader CreateNuGetPackageDownloader(