diff --git a/eng/pipelines/common/evaluate-default-paths.yml b/eng/pipelines/common/evaluate-default-paths.yml
index be1e09f93e20715d86d4e06e8c68fccfb80c4951..72a85c66f02efd7a80d42f1d8ef7a3fda2a5d8d9 100644
--- a/eng/pipelines/common/evaluate-default-paths.yml
+++ b/eng/pipelines/common/evaluate-default-paths.yml
@@ -12,6 +12,7 @@ parameters:
src/libraries/sendtohelix-wasm.targets
src/mono/nuget/Microsoft.NET.Runtime.WebAssembly.Sdk/*
src/mono/nuget/Microsoft.NET.Runtime.wasm.Sample.Mono/*
+ src/mono/sample/wasm/*
src/mono/wasi/*
src/mono/wasm/*
src/tasks/WasmAppBuilder/*
diff --git a/src/mono/sample/wasm/Directory.Build.targets b/src/mono/sample/wasm/Directory.Build.targets
index c01bfada90c654fdeb2b0748b791fb0b8dbee63d..8970dc1dc371617458daca07c3798a1222a41fed 100644
--- a/src/mono/sample/wasm/Directory.Build.targets
+++ b/src/mono/sample/wasm/Directory.Build.targets
@@ -7,6 +7,7 @@
WasmRunnerTemplate.cmd
$([MSBuild]::NormalizePath('$(WasmAppDir)', '$(RunScriptOutputName)'))
+ $(WasmXHarnessArgs) --web-server-use-cop