diff --git a/test/IntegrationTests/Microsoft.Testing.Platform.Acceptance.IntegrationTests/MSBuildTests.Test.cs b/test/IntegrationTests/Microsoft.Testing.Platform.Acceptance.IntegrationTests/MSBuildTests.Test.cs
index df12306aae..e4898b2a84 100644
--- a/test/IntegrationTests/Microsoft.Testing.Platform.Acceptance.IntegrationTests/MSBuildTests.Test.cs
+++ b/test/IntegrationTests/Microsoft.Testing.Platform.Acceptance.IntegrationTests/MSBuildTests.Test.cs
@@ -399,7 +399,17 @@ public async Task InvokeTestingPlatform_Target_Should_Set_DotnetRoot_For_AppHost
             environmentVariables: CreateEnvironmentVariables(),
             cancellationToken: TestContext.CancellationToken);
 
-        derivedResult.AssertOutputContains($"[env] {dotnetRootVariableName}={dotnetRoot}");
+        string dotnetRootOutputPrefix = $"[env] {dotnetRootVariableName}=";
+        string? dotnetRootOutput = derivedResult.StandardOutputLines
+            .Select(line => line.TrimStart())
+            .FirstOrDefault(line => line.StartsWith(dotnetRootOutputPrefix, StringComparison.Ordinal));
+        Assert.IsNotNull(dotnetRootOutput, derivedResult.ToString());
+        // DOTNET_HOST_PATH can preserve different drive-letter casing than RootFinder on Windows.
+        Assert.AreEqual(
+            dotnetRoot,
+            dotnetRootOutput[dotnetRootOutputPrefix.Length..],
+            ignoreCase: OperatingSystem.IsWindows(),
+            derivedResult.ToString());
 
         DotnetMuxerResult explicitResult = await DotnetCli.RunAsync(
             $"build -t:Test -p:TestingPlatformCaptureOutput=False -p:ExplicitDotnetRoot=\"{dotnetRoot}\" \"{testAsset.TargetAssetPath}\"",