diff --git a/src/Tests/Microsoft.NET.TestFramework/TestContext.cs b/src/Tests/Microsoft.NET.TestFramework/TestContext.cs
index b0401789bd66..a09b2750b410 100644
--- a/src/Tests/Microsoft.NET.TestFramework/TestContext.cs
+++ b/src/Tests/Microsoft.NET.TestFramework/TestContext.cs
@@ -65,6 +65,8 @@ public void AddTestEnvironmentVariables(SdkCommandSpec command)
 
         public static void Initialize(TestCommandLine commandLine)
         {
+            Environment.SetEnvironmentVariable("DOTNET_MULTILEVEL_LOOKUP", "0");
+
             TestContext testContext = new TestContext();
 
             // This is dependent on the current artifacts layout: