diff --git a/doc/pip_and_pep_668.rst b/doc/pip_and_pep_668.rst
index e43d11340..88ca2e2c7 100644
--- a/doc/pip_and_pep_668.rst
+++ b/doc/pip_and_pep_668.rst
@@ -19,9 +19,11 @@ The value of the environment variable can be any of ``1``, ``yes``, or ``true``.
 The string values are not case sensitive.
 
 rosdep is designed to use ``sudo`` in order to gain root privileges for installation when not run as root.
-If your system's sudo configuration prohibits the passing of environment variables
+If your system's sudo configuration prohibits the passing of environment variables use the :ref:`pip.conf <configure-using-pip.conf>` method below.
 
 
+.. _configure-using-pip.conf:
+
 Configure using pip.conf
 ------------------------