diff --git a/beat/web/scripts/localhost.py b/beat/web/scripts/localhost.py
index 070e76c9e1d6d8f2ab088b46d51bbb1115b5971e..09623703162f42b77a7944c498ed1fbc7e11bf71 100644
--- a/beat/web/scripts/localhost.py
+++ b/beat/web/scripts/localhost.py
@@ -65,7 +65,7 @@ Options:
                                      [default: %(nb_cores)s]
   -q <path>, --prefix=<path>         The prefix path of the directory
                                      containing the toolchains, algorithms,
-                                     etc. [default: web_dynamic_data]
+                                     etc. [default: prefix]
   -p <seconds>, --period=<seconds>   The number of seconds between successive
                                      attempts to schedule or to process worker
                                      duties. [default: 5]