diff --git a/src/libraries/sendtohelixhelp.proj b/src/libraries/sendtohelixhelp.proj
index 8bf53d4d5fc152..6c04a4365065f1 100644
--- a/src/libraries/sendtohelixhelp.proj
+++ b/src/libraries/sendtohelixhelp.proj
@@ -139,7 +139,7 @@
     <HelixCommandPrefixEnvVarItem Condition="'$(WindowsShell)' == 'true'" Include="DOTNET_CLI_HOME=%HELIX_WORKITEM_ROOT%\.dotnet" />
 
     <HelixCommandPrefixEnvVarItem Condition="'$(WindowsShell)' != 'true'" Include="DOTNET_ROOT=$HELIX_CORRELATION_PAYLOAD/$(SdkForWorkloadTestingDirName)" />
-    <!--<HelixCommandPrefixEnvVarItem Condition="'$(WindowsShell)' == 'true'" Include="DOTNET_ROOT=%HELIX_CORRELATION_PAYLOAD%\$(SdkForWorkloadTestingDirName)" />-->
+    <HelixCommandPrefixEnvVarItem Condition="'$(WindowsShell)' == 'true'" Include="DOTNET_ROOT=%HELIX_CORRELATION_PAYLOAD%\$(SdkForWorkloadTestingDirName)" />
 
     <HelixCommandPrefixEnvVarItem Condition="'$(WindowsShell)' != 'true'" Include="SDK_FOR_WORKLOAD_TESTING_PATH=%24{HELIX_CORRELATION_PAYLOAD}/$(SdkForWorkloadTestingDirName)" />
     <HelixCommandPrefixEnvVarItem Condition="'$(WindowsShell)' == 'true'" Include="SDK_FOR_WORKLOAD_TESTING_PATH=%HELIX_CORRELATION_PAYLOAD%\$(SdkForWorkloadTestingDirName)" />
diff --git a/src/mono/wasm/Wasm.Build.Tests/Common/BuildEnvironment.cs b/src/mono/wasm/Wasm.Build.Tests/Common/BuildEnvironment.cs
index 4dddc0c2ed2d40..257502ba61802a 100644
--- a/src/mono/wasm/Wasm.Build.Tests/Common/BuildEnvironment.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/Common/BuildEnvironment.cs
@@ -106,6 +106,7 @@ public BuildEnvironment()
             // `runtime` repo's build environment sets these, and they
             // mess up the build for the test project, which is using a different
             // dotnet
+            EnvVars["DOTNET_ROOT"] = sdkForWorkloadPath;
             EnvVars["DOTNET_INSTALL_DIR"] = sdkForWorkloadPath;
             EnvVars["DOTNET_MULTILEVEL_LOOKUP"] = "0";
             EnvVars["DOTNET_SKIP_FIRST_TIME_EXPERIENCE"] = "1";
diff --git a/src/mono/wasm/Wasm.Build.Tests/Common/RunCommand.cs b/src/mono/wasm/Wasm.Build.Tests/Common/RunCommand.cs
index b13b6011de2656..5ab27489622aed 100644
--- a/src/mono/wasm/Wasm.Build.Tests/Common/RunCommand.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/Common/RunCommand.cs
@@ -11,7 +11,7 @@ public class RunCommand : DotNetCommand
     public RunCommand(BuildEnvironment buildEnv, ITestOutputHelper _testOutput, string label="") : base(buildEnv, _testOutput, false, label)
     {
         WithEnvironmentVariables(buildEnv.EnvVars);
-        WithEnvironmentVariable("DOTNET_ROOT", buildEnv.DotNet);
+        WithEnvironmentVariable("DOTNET_ROOT", Path.GetDirectoryName(buildEnv.DotNet)!);
         WithEnvironmentVariable("DOTNET_INSTALL_DIR", Path.GetDirectoryName(buildEnv.DotNet)!);
         WithEnvironmentVariable("DOTNET_MULTILEVEL_LOOKUP", "0");
         WithEnvironmentVariable("DOTNET_SKIP_FIRST_TIME_EXPERIENCE", "1");