diff --git a/doc.md b/doc.md
index 546bfa1..5c5e55b 100644
--- a/doc.md
+++ b/doc.md
@@ -75,10 +75,12 @@ REQUIRED. The OP server url. For example `http://localhost:8000`.
 
 ##### LOGIN_URL
 REQUIRED. Used to log the user in. [Read more in Django docs](https://docs.djangoproject.com/en/1.7/ref/settings/#login-url).
+
 Default is `/accounts/login/`.
 
 ##### OIDC_CODE_EXPIRE
 OPTIONAL. Expressed in seconds.
+
 Default is `60*10`.
 
 ##### OIDC_EXTRA_SCOPE_CLAIMS
@@ -126,11 +128,15 @@ If a field is empty or ``None`` will be cleaned from the response.
 
 ##### OIDC_IDTOKEN_EXPIRE
 OPTIONAL. Expressed in seconds.
+
 Default is `60*10`.
 
 ##### OIDC_IDTOKEN_SUB_GENERATOR
 OPTIONAL. Subject Identifier. A locally unique and never reassigned identifier within the Issuer for the End-User, which is intended to be consumed by the Client.
-Is a function that receives both `user` and `client` objects. Default is:
+
+Is just a function that receives both `user` and `client` objects, returns a string.
+
+Default is:
 ```python
 def default_sub_generator(user, client):
 
@@ -139,6 +145,7 @@ def default_sub_generator(user, client):
 
 ##### OIDC_TOKEN_EXPIRE
 OPTIONAL. Token object expiration after been created. Expressed in seconds.
+
 Default is `60*60`.
 
 ## Users And Clients