diff --git a/mkdocs.yml b/mkdocs.yml
index 3e1a4907973a5301a7ac1768d71934f9ba87ced5..ffc874ce2ec3398386b1902880cfca998d4b6e0d 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -76,7 +76,8 @@ nav:
           - Introduction: deployment.md
           - Docker Compose: deploymentCompose.md
           - Kubernetes: deploymentK8s.md
-      - Configuration: config_intro.md
+      - Configuration:
+          - Introduction: config_intro.md
           - NFV Orchestrator Configuration: nfvoconfig.md
       - Service design:
           - Introduction: service_design_intro.md