diff --git a/poc-datacollector/modules/ROOT/pages/index-src.adoc b/poc-datacollector/modules/ROOT/pages/index-src.adoc
index 972e31d..fe06321 100644
--- a/poc-datacollector/modules/ROOT/pages/index-src.adoc
+++ b/poc-datacollector/modules/ROOT/pages/index-src.adoc
@@ -12,7 +12,7 @@ image::ROOT:types-of-mounts-bind.png[,250,float=right]
 
 *"Directory Maps"* are the preferred mechanism for persisting data generated by and used by Docker containers. We use here "bind mounts" and they are dependent on the directory structure and OS of the host machine.
 
-WARNING: Your local changes to the files will be overwritten by click on "Download" button.
+WARNING: Your local changes to the files will be overwritten by click on "Download" button. You should always *take a full backup* first (simple copy the directory tree)
 
 == webclient