diff --git a/README.md b/README.md
index 8731a3b..5d3aa69 100644
--- a/README.md
+++ b/README.md
@@ -38,4 +38,11 @@ An example of what the file content should be:
 }
 ```
 
-If you change this value, you have to restart the server to apply changes.
\ No newline at end of file
+If you change this value, you have to restart the server to apply changes.
+
+By default, its value is:
+```json
+{
+    "url": "default-ns"
+}
+```