diff --git a/src/utils/resources.py b/src/utils/resources.py
index ef96f2e795..b9f04e1933 100644
--- a/src/utils/resources.py
+++ b/src/utils/resources.py
@@ -574,7 +574,7 @@ class PermissionsResource(AppResource):
     ```
 
     ### Properties (for each perm name)
-    - `url`: The relative URI corresponding to this permission. Typically `/` or `/something`. This property may be omitted for non-web permissions.
+    - `url`: The relative URI corresponding to this permission. Typically `/` or `/something`. This property may be omitted for non-web permissions. Can also be a regex, prefixed by `re:` like `re:/api/[A-Z]*$`.
     - `show_tile`: (default: `true` if `url` is defined) Wether or not a tile should be displayed for that permission in the user portal
     - `allowed`: (default: nobody) The group initially allowed to access this perm, if `init_{perm}_permission` is not defined in the manifest questions. Note that the admin may tweak who is allowed/unallowed on that permission later on, this is only meant to **initialize** the permission.
     - `auth_header`: (default: `true`) Define for the URL of this permission, if SSOwat pass the authentication header to the application. Default is true