diff --git a/src/fobi/contrib/apps/drf_integration/README.rst b/src/fobi/contrib/apps/drf_integration/README.rst
index d9afd1d7..5a903bdf 100644
--- a/src/fobi/contrib/apps/drf_integration/README.rst
+++ b/src/fobi/contrib/apps/drf_integration/README.rst
@@ -23,7 +23,7 @@ The following fields are suppored.
 - email
 - file
 - float
-- hidden
+- hidden (in terms of the Django REST framework - a read-only field)
 - input (some sort of a copy of `text` plugin)
 - integer
 - ip_address
diff --git a/src/fobi/contrib/apps/drf_integration/TODOS.rst b/src/fobi/contrib/apps/drf_integration/TODOS.rst
index 4e7da01a..6459f57c 100644
--- a/src/fobi/contrib/apps/drf_integration/TODOS.rst
+++ b/src/fobi/contrib/apps/drf_integration/TODOS.rst
@@ -28,7 +28,8 @@ Must haves
 
 Should haves
 ------------
-- Find why HiddenInput tests fail.
++ Find why HiddenInput tests fail (in terms of Django REST framework it's
+  a read-only field).
 - Add custom field instance callback for handling data of the custom field
   instances. Do it this way and not the other way, since things get
   complicated when we start to deal with wizards.