diff --git a/build/tfs/product-build.yml b/build/tfs/product-build.yml
index 2727f5eed1c..e8ff8a943b8 100644
--- a/build/tfs/product-build.yml
+++ b/build/tfs/product-build.yml
@@ -40,7 +40,7 @@ phases:
   - powershell: |
       npm run gulp -- "electron-$(VSCODE_ARCH)"
       .\scripts\test.bat --build --tfs
-      yarn smoketest -- --build "$(agent.builddirectory)/VSCode-win32-$(VSCODE_ARCH)"
+      yarn smoketest -- --build "$(agent.builddirectory)\VSCode-win32-$(VSCODE_ARCH)"
     name: test
 
   - task: SFP.build-tasks.custom-build-task-1.EsrpCodeSigning@1