diff --git a/docs/unit.rst b/docs/unit.rst
index 0016204a7399a05ac5975e5418788337c9609236..fe37a6d5632aaaef90032e43c4ef166ad39e9ef5 100644
--- a/docs/unit.rst
+++ b/docs/unit.rst
@@ -64,6 +64,6 @@ Unit
    .. TODO: Maybe should I put the limits of build here, and when to use build_target
    .. automethod:: build_target
    .. automethod:: train
+   .. automethod:: research
    .. automethod:: morph
-