diff --git a/authens/conf.py b/authens/conf.py
index 732b984..1e9db4d 100644
--- a/authens/conf.py
+++ b/authens/conf.py
@@ -1,4 +1,5 @@
 LDAP_SERVER_URL = "ldaps://ldap.spi.ens.fr:636"
 AUTHENS_USE_OLDCAS = True
 AUTHENS_USE_PASSWORD = True
+AUTHENS_ALLOW_STAFF = False
 # TODO: CAS_SERVER_URL
diff --git a/authens/utils.py b/authens/utils.py
index 2dc0876..733cf10 100644
--- a/authens/utils.py
+++ b/authens/utils.py
@@ -3,6 +3,10 @@ from urllib.parse import urlunparse
 
 from cas import CASClient
 
+from django.conf import settings
+
+from authens import conf as default_conf
+
 
 def get_cas_client(request):
     """Return a CAS client configured for SPI's CAS."""
@@ -26,6 +30,15 @@ def parse_entrance_year(home_dir):
         return None
 
     dirs = home_dir.split("/")
+
+    allow_staff = getattr(
+        settings, "AUTHENS_ALLOW_STAFF", default_conf.AUTHENS_ALLOW_STAFF
+    )
+
+    # The staff members have an entrance year set to 0
+    if allow_staff and dirs[:3] == ["", "users", "staffs"]:
+        return 0
+
     if len(dirs) < 3 or not dirs[2].isdecimal() or dirs[1] != "users":
         raise ValueError("Invalid home directory: {}".format(home_dir))
 
diff --git a/setup.cfg b/setup.cfg
index eea30e5..7d2e5cf 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -10,7 +10,7 @@ ignore =
   W503
 
 [isort]
-profile=black
+profile = black
 known_django = django
 known_first_party = authens,tests
 sections = FUTURE,STDLIB,THIRDPARTY,DJANGO,FIRSTPARTY,LOCALFOLDER