diff --git a/README.md b/README.md
index b68a7de..4e87cf0 100644
--- a/README.md
+++ b/README.md
@@ -192,3 +192,4 @@ The service is configured by Environment Variable:
 | WSGI_TIMEOUT | `5` | WSGI timeout. |
 | GUNICORN_TMPFS_DIR | `None` |The working directory for the gunicorn workers. |
 | WSGI_WORKERS | `2` | The number of workers per CPU. | 
+| UNLISTED_ICON_SETS | `'babs'`| Comma separated list of icon set to un-list. Those sets won't be listed in the /sets endpoint.  |
diff --git a/app/icon_set.py b/app/icon_set.py
index d95a5c0..f08350a 100644
--- a/app/icon_set.py
+++ b/app/icon_set.py
@@ -9,7 +9,7 @@
 from app.settings import COLORABLE_ICON_SETS
 from app.settings import ICON_SET_LANGUAGE
 from app.settings import IMAGE_FOLDER
-from app.settings import LEGACY_ICON_SETS
+from app.settings import UNLISTED_ICON_SETS
 
 
 def get_icon_set(icon_set_name):
@@ -32,7 +32,7 @@ def get_all_icon_sets():
     for root, dirs, files in os.walk(IMAGE_FOLDER):
         for icon_set_name in dirs:
             # icons of legacy icon sets are still available, but the icon set will not be listed
-            if icon_set_name not in LEGACY_ICON_SETS:
+            if icon_set_name not in UNLISTED_ICON_SETS:
                 icon_sets.append(get_icon_set(icon_set_name))
     return icon_sets
 
diff --git a/app/settings.py b/app/settings.py
index a4929ca..41a3d2a 100644
--- a/app/settings.py
+++ b/app/settings.py
@@ -15,7 +15,7 @@
 )
 
 COLORABLE_ICON_SETS = ['default']
-LEGACY_ICON_SETS = ['babs']
+UNLISTED_ICON_SETS = os.environ.get('UNLISTED_ICON_SETS', 'babs').split(',')
 ICON_SET_LANGUAGE = {'babs-de': 'de', 'babs-fr': 'fr', 'babs-it': 'it'}
 DEFAULT_COLOR = {"r": '255', "g": '0', "b": '0'}
 DEFAULT_ICON_SIZE = 48
diff --git a/tests/unit_tests/test_all_icons.py b/tests/unit_tests/test_all_icons.py
index e3a8704..d61b606 100644
--- a/tests/unit_tests/test_all_icons.py
+++ b/tests/unit_tests/test_all_icons.py
@@ -13,7 +13,7 @@
 from app.settings import COLORABLE_ICON_SETS
 from app.settings import DEFAULT_ICON_SIZE
 from app.settings import IMAGE_FOLDER
-from app.settings import LEGACY_ICON_SETS
+from app.settings import UNLISTED_ICON_SETS
 from tests.unit_tests.base_test import ServiceIconsUnitTests
 
 
@@ -159,11 +159,11 @@ def test_all_icon_sets_endpoint(self):
         self.assertTrue(response.json['items'])
         icon_sets_from_endpoint = response.json['items']
         self.assertEqual(
-            len(icon_sets_from_endpoint), len(self.all_icon_sets) - len(LEGACY_ICON_SETS)
+            len(icon_sets_from_endpoint), len(self.all_icon_sets) - len(UNLISTED_ICON_SETS)
         )
-        for legacy_icon_set in LEGACY_ICON_SETS:
+        for unlisted_icon_set in UNLISTED_ICON_SETS:
             self.assertNotIn(
-                legacy_icon_set, icon_sets_from_endpoint, msg="Icon set should not be listed"
+                unlisted_icon_set, icon_sets_from_endpoint, msg="Icon set should not be listed"
             )
         for icon_set in icon_sets_from_endpoint:
             self.assertIn('name', icon_set)