diff --git a/docs/fundamentals/toc.yml b/docs/fundamentals/toc.yml
index 835ba50b1486f..87160ec8a441a 100644
--- a/docs/fundamentals/toc.yml
+++ b/docs/fundamentals/toc.yml
@@ -1,8 +1,10 @@
 items:
   - name: .NET fundamentals documentation
     href: index.yml
+  - name: Data gateway 0
+    href: /dotnet/my-data-integration/TOC.json
   - name: Data gateway 1
-    href: ../my-data-integration/TOC.yml
+    href: /dotnet/my-data-integration/TOC.yml
   - name: Data gateway 2
     href: /dotnet/my-data-integration/gateway/
   - name: Get started