diff --git a/poc-datacollector/modules/ROOT/nav.adoc b/poc-datacollector/modules/ROOT/nav.adoc
index 3b43600..65d0f80 100644
--- a/poc-datacollector/modules/ROOT/nav.adoc
+++ b/poc-datacollector/modules/ROOT/nav.adoc
@@ -1,4 +1,5 @@
 * xref:index.adoc[datacollector]
 * xref:index-structure.adoc[project structure]
 ** xref:index-vuejs.adoc[Vue.js]
+** xref:index-mongo.adoc[Mongo]
 * xref:index-src.adoc[src-files]