diff --git a/README.md b/README.md
index 7c01c7a77ee33833f7fbf1b0afb21c17a0e5fc06..a277cdba5eadbde69014943a9e9d9407ec0da029 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ Configuration parameters are set by these docker environment variables:
 | **CUTOUT_SERVICE_URL** | URL in Service Descriptor of the VOTable response (default: *empty*)|
 | **DISCOVERY_CONTEXT_ROOT** | root of the end-points (default: 'siav2') |
 
+Context-root parameter uses 'tomcat syntax' in which the forward-slash path-separator is replaced with hash: vlkb#datasets -> vlkb/datasets
 
 ## vlkb-obscore