diff --git a/oidc_provider/lib/utils/common.py b/oidc_provider/lib/utils/common.py
index 6b889ba..04191cc 100644
--- a/oidc_provider/lib/utils/common.py
+++ b/oidc_provider/lib/utils/common.py
@@ -56,3 +56,10 @@ def default_sub_generator(user):
     Default function for setting OIDC_IDTOKEN_SUB_GENERATOR.
     """
     return str(user.id)
+
+
+def default_after_userlogin_hook(request, user, client):
+    """
+    Default function for setting OIDC_AFTER_USERLOGIN_HOOK.
+    """
+    return None
diff --git a/oidc_provider/settings.py b/oidc_provider/settings.py
index a4d277e..5586c22 100644
--- a/oidc_provider/settings.py
+++ b/oidc_provider/settings.py
@@ -25,10 +25,7 @@ class DefaultSettings(object):
         OPTIONAL.  Provide a way to plug into the process after
         the user has logged in, typically to perform some business logic.
         """
-        def default_hook_func(request, user, client):
-            return None
-
-        return default_hook_func
+        return 'oidc_provider.lib.utils.common.default_after_userlogin_hook'
 
     @property
     def OIDC_CODE_EXPIRE(self):
diff --git a/oidc_provider/tests/app/settings.py b/oidc_provider/tests/app/settings.py
index 1d436f0..1778249 100644
--- a/oidc_provider/tests/app/settings.py
+++ b/oidc_provider/tests/app/settings.py
@@ -13,11 +13,11 @@ DATABASES = {
 
 SITE_ID = 1
 
-MIDDLEWARE_CLASSES = (
+MIDDLEWARE_CLASSES = [
     'django.middleware.common.CommonMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
-)
+]
 
 LOGGING = {
     'version': 1,
@@ -35,24 +35,23 @@ LOGGING = {
     },
 }
 
-INSTALLED_APPS = (
+INSTALLED_APPS = [
     'django.contrib.auth',
     'django.contrib.contenttypes',
     'django.contrib.sessions',
     'django.contrib.sites',
     'django.contrib.messages',
     'django.contrib.admin',
-
     'oidc_provider',
-)
+]
 
-SECRET_KEY = 'this-is-top-secret'
+SECRET_KEY = 'this-should-be-top-secret'
 
 ROOT_URLCONF = 'oidc_provider.tests.app.urls'
 
-TEMPLATE_DIRS = (
-    "oidc_provider/tests/templates",
-)
+TEMPLATE_DIRS = [
+    'oidc_provider/tests/templates',
+]
 
 # OIDC Provider settings.
 
diff --git a/oidc_provider/views.py b/oidc_provider/views.py
index 9eb3c18..82e302d 100644
--- a/oidc_provider/views.py
+++ b/oidc_provider/views.py
@@ -32,7 +32,7 @@ class AuthorizeView(View):
 
             if request.user.is_authenticated():
                 # Check if there's a hook setted.
-                hook_resp = settings.get('OIDC_AFTER_USERLOGIN_HOOK')(
+                hook_resp = settings.get('OIDC_AFTER_USERLOGIN_HOOK', import_str=True)(
                     request=request, user=request.user,
                     client=authorize.client)
                 if hook_resp: