diff --git a/tests/cfg/nested.yml b/tests/cfg/nested.yml
new file mode 100644
index 0000000..c3af93f
--- /dev/null
+++ b/tests/cfg/nested.yml
@@ -0,0 +1,26 @@
+users:
+  backends_groups:
+    ad: [Domain Users]
+    ldap: ['cn=users,ou=group,dc=example,dc=com']
+  display_name: Simple Users
+  subroles:
+    admin-lv2:
+      LC_admins: true
+      backends_groups:
+        ad: [Domain Users]
+        ldap: ['cn=nagios admins,ou=group,dc=example,dc=com']
+      display_name: Administrators Level 2
+      subroles:
+        admin-lv3:
+          backends_groups:
+            ad: [Domain Users, Administrators, Domain Controllers]
+            ldap: ['cn=dns admins,ou=group,dc=example,dc=com', 'cn=nagios admins,ou=group,dc=example,dc=com',
+              'cn=puppet admins,ou=group,dc=example,dc=com',]
+          display_name: Administrators Level 3
+          subroles: {}
+    developpers:
+      backends_groups:
+        ad: [Domain Users]
+        ldap: ['cn=developpers,ou=group,dc=example,dc=com']
+      display_name: Developpers
+      subroles: {}
diff --git a/tests/test_Roles.py b/tests/test_Roles.py
index 6d4b53c..2d2e06e 100644
--- a/tests/test_Roles.py
+++ b/tests/test_Roles.py
@@ -67,6 +67,11 @@
         }
         assert res == expected
 
+    def testNested(self):
+        inv = Roles('./tests/cfg/nested.yml')
+        expected = {'developpers': {'backends_groups': {'ad': ['Domain Users'], 'ldap': ['cn=developpers,ou=group,dc=example,dc=com', 'cn=users,ou=group,dc=example,dc=com']}, 'display_name': 'Developpers'}, 'admin-lv3': {'backends_groups': {'ad': ['Domain Users', 'Administrators', 'Domain Controllers'], 'ldap': ['cn=nagios admins,ou=group,dc=example,dc=com', 'cn=users,ou=group,dc=example,dc=com', 'cn=puppet admins,ou=group,dc=example,dc=com', 'cn=dns admins,ou=group,dc=example,dc=com']}, 'display_name': 'Administrators Level 3'}, 'admin-lv2': {'backends_groups': {'ad': ['Domain Users'], 'ldap': ['cn=nagios admins,ou=group,dc=example,dc=com', 'cn=users,ou=group,dc=example,dc=com']}, 'display_name': 'Administrators Level 2', 'LC_admins': True}, 'users': {'backends_groups': {'ad': ['Domain Users'], 'ldap': ['cn=users,ou=group,dc=example,dc=com']}, 'display_name': 'Simple Users'}}
+        assert expected == inv.flatten
+
     def testGetGroupMissingRole(self):
         inv = Roles('./tests/cfg/roles.yml')
         try: