diff --git a/fastapi/fastapi_dispatcher.py b/fastapi/fastapi_dispatcher.py
index a78e3f816..be97fdc39 100644
--- a/fastapi/fastapi_dispatcher.py
+++ b/fastapi/fastapi_dispatcher.py
@@ -20,7 +20,7 @@ def dispatch(self, endpoint, args):
         # don't parse the httprequest let starlette parse the stream
         self.request.params = {}  # dict(self.request.get_http_params(), **args)
         environ = self._get_environ()
-        root_path = "/" + environ["PATH_INFO"].split("/")[1]
+        root_path = "/".join(environ["PATH_INFO"].split("/")[0:-1])
         # TODO store the env into contextvar to be used by the odoo_env
         # depends method
         fastapi_endpoint = self.request.env["fastapi.endpoint"].sudo()