diff --git a/Doc/c-api/module.rst b/Doc/c-api/module.rst
index 26c4384..2a02e50 100644
--- a/Doc/c-api/module.rst
+++ b/Doc/c-api/module.rst
@@ -124,10 +124,14 @@ There are only a few functions special to module objects.
 
 .. c:function:: PyObject* PyState_FindModule(PyModuleDef *def)
 
-   Returns the module object that was created from *def* for the current interpreter.
-   This method requires that the module object has been attached to the interpreter state with
-   :c:func:`PyState_AddModule` beforehand. In case the corresponding module object is not
-   found or has not been attached to the interpreter state yet, it returns NULL.
+   Returns the module object that was created from *def* for the current
+   interpreter. This method requires that the module object has been attached to
+   the interpreter state with :c:func:`PyState_AddModule` beforehand. When
+   Python imports a module, it calls :c:func:`PyState_AddModule`, so an
+   extension module does not have to call it explicitly.
+
+   In case the corresponding module object is not found or has not been attached
+   to the interpreter state yet, it returns NULL.
 
 .. c:function:: int PyState_AddModule(PyObject *module, PyModuleDef *def)