diff --git a/CHANGES.rst b/CHANGES.rst
index a89de65e..a6c973b3 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,7 +4,8 @@ Changelog
 5.9.5 (unreleased)
 ------------------
 
-- Nothing changed yet.
+- Fixed empty spaces in shortname when adding a content.
+  [daniele]
 
 
 5.9.4 (2025-12-05)
diff --git a/docs/conf.py b/docs/conf.py
index 2deb08ed..0c999488 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -12,7 +12,6 @@
 import os
 import sys
 
-
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
diff --git a/setup.py b/setup.py
index 999772b2..c0ea9e6e 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,6 @@
 from setuptools import find_packages
 from setuptools import setup
 
-
 long_description = "\n\n".join(
     [
         open("README.rst").read(),
diff --git a/src/redturtle/volto/__init__.py b/src/redturtle/volto/__init__.py
index ca68948b..198bda69 100644
--- a/src/redturtle/volto/__init__.py
+++ b/src/redturtle/volto/__init__.py
@@ -1,11 +1,64 @@
 # -*- coding: utf-8 -*-
+
+from Acquisition import aq_base
+from plone.app.content.interfaces import INameFromTitle
 from plone.app.dexterity.behaviors.metadata import ICategorization
 from plone.app.dexterity.textindexer import utils
+from plone.app.uuid.utils import uuidToObject
+from plone.restapi.bbb import base_hasattr
+from plone.restapi.services.content import utils as rest_utils
+from plone.uuid.interfaces import IUUID
 from redturtle.volto import patches  # noqa
+from zope.container.contained import notifyContainerModified
+from zope.container.contained import ObjectAddedEvent
+from zope.container.interfaces import INameChooser
+from zope.event import notify
 from zope.i18nmessageid import MessageFactory
 
-
 _ = MessageFactory("redturtle.volto")
 
 # Index also subjects in SearchableText.
 utils.searchable(ICategorization, "subjects")
+
+
+def add_patched(container, obj, rename=True):
+    """Add an object to a container."""
+
+    id_ = getattr(aq_base(obj), "id", None)
+
+    # Archetypes objects are already created in a container thus we just fire
+    # the notification events and rename the object if necessary.
+    if base_hasattr(obj, "_at_rename_after_creation"):
+        notify(ObjectAddedEvent(obj, container, id_))
+        notifyContainerModified(container)
+        if obj._at_rename_after_creation and rename:
+            obj._renameAfterCreation(check_auto_id=True)
+        return obj
+    else:
+        if rename:
+            chooser = INameChooser(container)
+            # INameFromTitle adaptable objects should not get a name
+            # suggestion. NameChooser would prefer the given name instead of
+            # the one provided by the INameFromTitle adapter.
+            suggestion = None
+            name_from_title = INameFromTitle(obj, None)
+            if name_from_title is None:
+                suggestion = obj.Title()
+            id_ = chooser.chooseName(suggestion, obj)
+            obj.id = id_
+
+        chooser = INameChooser(container)
+        id_ = chooser.chooseName(obj.id, obj)
+        obj.id = id_
+        new_id = container._setObject(id_, obj)
+        # _setObject triggers ObjectAddedEvent which can end up triggering a
+        # content rule to move the item to a different container. In this case
+        # look up the object by UUID.
+        try:
+            return container._getOb(new_id)
+        except AttributeError:
+            uuid = IUUID(obj)
+            return uuidToObject(uuid)
+
+
+rest_utils.add = add_patched
diff --git a/src/redturtle/volto/adapters/namechooser.py b/src/redturtle/volto/adapters/namechooser.py
index fdf3f965..62712d28 100644
--- a/src/redturtle/volto/adapters/namechooser.py
+++ b/src/redturtle/volto/adapters/namechooser.py
@@ -40,8 +40,10 @@ def chooseName(self, name, obj):
         """
         Additional check: the id should not be in redirection tool.
         """
+
         id = super().chooseName(name=name, obj=obj)
 
         # this raise BadRequest if there is an override with aliases
         check_alias(context=self.context, id=id)
+
         return id
diff --git a/src/redturtle/volto/adapters/rss.py b/src/redturtle/volto/adapters/rss.py
index 2ed8ea70..fa3c404d 100644
--- a/src/redturtle/volto/adapters/rss.py
+++ b/src/redturtle/volto/adapters/rss.py
@@ -9,7 +9,6 @@
 from plone.volto.behaviors.preview import IPreview
 from redturtle.volto.interfaces import ICustomFeedItem
 
-
 try:
     from plone.base.interfaces.syndication import IFeed
 except ModuleNotFoundError:
diff --git a/src/redturtle/volto/adapters/stringinterp.py b/src/redturtle/volto/adapters/stringinterp.py
index a4a4e215..7eaaf67f 100644
--- a/src/redturtle/volto/adapters/stringinterp.py
+++ b/src/redturtle/volto/adapters/stringinterp.py
@@ -4,7 +4,6 @@
 from redturtle.volto import _
 from zope.component import adapter
 
-
 try:
     from plone.stringinterp import _ as stringinterp_mf
 except ImportError:
diff --git a/src/redturtle/volto/browser/find_blocks.py b/src/redturtle/volto/browser/find_blocks.py
index dec9a452..6d970b89 100644
--- a/src/redturtle/volto/browser/find_blocks.py
+++ b/src/redturtle/volto/browser/find_blocks.py
@@ -9,7 +9,6 @@
 import json
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 BLOCKS = [
diff --git a/src/redturtle/volto/browser/find_broken_links.py b/src/redturtle/volto/browser/find_broken_links.py
index b9034716..83cf265d 100644
--- a/src/redturtle/volto/browser/find_broken_links.py
+++ b/src/redturtle/volto/browser/find_broken_links.py
@@ -6,7 +6,6 @@
 from six import StringIO
 from zope.schema import getFieldsInOrder
 
-
 try:
     from collective.volto.blocksfield.field import BlocksField
 
@@ -17,7 +16,6 @@
 import csv
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/src/redturtle/volto/browser/fix_links.py b/src/redturtle/volto/browser/fix_links.py
index 686a18bd..61ad60fc 100644
--- a/src/redturtle/volto/browser/fix_links.py
+++ b/src/redturtle/volto/browser/fix_links.py
@@ -13,7 +13,6 @@
 import logging
 import re
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/src/redturtle/volto/config/__init__.py b/src/redturtle/volto/config/__init__.py
index caf3ecbe..34c0cdb6 100644
--- a/src/redturtle/volto/config/__init__.py
+++ b/src/redturtle/volto/config/__init__.py
@@ -1,4 +1,3 @@
 import os
 
-
 MAX_LIMIT = int(os.environ.get("REDTURTLE_VOLTO_MAX_LIMIT_SEARCH") or 500)
diff --git a/src/redturtle/volto/indexers.py b/src/redturtle/volto/indexers.py
index ae7b392c..f0704889 100644
--- a/src/redturtle/volto/indexers.py
+++ b/src/redturtle/volto/indexers.py
@@ -8,7 +8,6 @@
 from zope.interface import implementer
 from zope.publisher.interfaces.browser import IBrowserRequest
 
-
 try:
     from plone.base.utils import safe_text
 except ImportError:
diff --git a/src/redturtle/volto/locales/update.py b/src/redturtle/volto/locales/update.py
index a694c489..156f460f 100644
--- a/src/redturtle/volto/locales/update.py
+++ b/src/redturtle/volto/locales/update.py
@@ -4,7 +4,6 @@
 import pkg_resources
 import subprocess
 
-
 domain = "redturtle.volto"
 os.chdir(pkg_resources.resource_filename(domain, ""))
 os.chdir("../../../")
diff --git a/src/redturtle/volto/monkey.py b/src/redturtle/volto/monkey.py
index 963da2f6..295e9ace 100644
--- a/src/redturtle/volto/monkey.py
+++ b/src/redturtle/volto/monkey.py
@@ -20,7 +20,6 @@
 import logging
 import os
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/src/redturtle/volto/patches.py b/src/redturtle/volto/patches.py
index 6d916180..5c1f3b0f 100644
--- a/src/redturtle/volto/patches.py
+++ b/src/redturtle/volto/patches.py
@@ -16,7 +16,6 @@
 
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 _ = MessageFactory("plone")
diff --git a/src/redturtle/volto/restapi/deserializer/blocks.py b/src/redturtle/volto/restapi/deserializer/blocks.py
index ee7809aa..d3935e3e 100644
--- a/src/redturtle/volto/restapi/deserializer/blocks.py
+++ b/src/redturtle/volto/restapi/deserializer/blocks.py
@@ -8,7 +8,6 @@
 from zope.component import adapter
 from zope.interface import implementer
 
-
 EXCLUDE_KEYS = ["@type", "type", "token", "value", "@id", "query", "bg_color"]
 EXCLUDE_TYPES = [
     "title",
diff --git a/src/redturtle/volto/restapi/serializer/blocks.py b/src/redturtle/volto/restapi/serializer/blocks.py
index dd246bca..94850f01 100644
--- a/src/redturtle/volto/restapi/serializer/blocks.py
+++ b/src/redturtle/volto/restapi/serializer/blocks.py
@@ -14,7 +14,6 @@
 from zope.globalrequest import getRequest
 from zope.interface import implementer
 
-
 EXCLUDE_KEYS = ["@type", "type", "token", "value", "@id", "query", "bg_color"]
 EXCLUDE_TYPES = [
     "title",
diff --git a/src/redturtle/volto/restapi/serializer/dxfields.py b/src/redturtle/volto/restapi/serializer/dxfields.py
index d5f81fe2..dda44fc9 100644
--- a/src/redturtle/volto/restapi/serializer/dxfields.py
+++ b/src/redturtle/volto/restapi/serializer/dxfields.py
@@ -15,7 +15,6 @@
 
 import re
 
-
 RESOLVEUID_RE = re.compile(".*?/resolve[Uu]id/([^/]*)/?(.*)$")
 
 
diff --git a/src/redturtle/volto/restapi/serializer/summary.py b/src/redturtle/volto/restapi/serializer/summary.py
index 5cc82224..71dc93a5 100644
--- a/src/redturtle/volto/restapi/serializer/summary.py
+++ b/src/redturtle/volto/restapi/serializer/summary.py
@@ -14,7 +14,6 @@
 from zope.interface import implementer
 from zope.interface import Interface
 
-
 EMPTY_STRINGS = ["None"]
 
 
diff --git a/src/redturtle/volto/restapi/services/querystringsearch/get.py b/src/redturtle/volto/restapi/services/querystringsearch/get.py
index 299d3d2d..9374445c 100644
--- a/src/redturtle/volto/restapi/services/querystringsearch/get.py
+++ b/src/redturtle/volto/restapi/services/querystringsearch/get.py
@@ -22,7 +22,6 @@
 
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/src/redturtle/volto/restapi/services/search/get.py b/src/redturtle/volto/restapi/services/search/get.py
index e4d44258..220629be 100644
--- a/src/redturtle/volto/restapi/services/search/get.py
+++ b/src/redturtle/volto/restapi/services/search/get.py
@@ -10,7 +10,6 @@
 
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 # search for 'ranking' in 'SearchableText' and rank very high
diff --git a/src/redturtle/volto/setuphandlers.py b/src/redturtle/volto/setuphandlers.py
index 95ea06dc..f80638f8 100644
--- a/src/redturtle/volto/setuphandlers.py
+++ b/src/redturtle/volto/setuphandlers.py
@@ -5,7 +5,6 @@
 
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/src/redturtle/volto/tests/test_blocks_linkintegrity.py b/src/redturtle/volto/tests/test_blocks_linkintegrity.py
index 39a3f761..579e85f3 100644
--- a/src/redturtle/volto/tests/test_blocks_linkintegrity.py
+++ b/src/redturtle/volto/tests/test_blocks_linkintegrity.py
@@ -10,7 +10,6 @@
 
 import unittest
 
-
 HAS_PLONE_6 = getattr(
     import_module("Products.CMFPlone.factory"), "PLONE60MARKER", False
 )
diff --git a/src/redturtle/volto/tests/test_content_types.py b/src/redturtle/volto/tests/test_content_types.py
index 9d1f7ed1..c7171623 100644
--- a/src/redturtle/volto/tests/test_content_types.py
+++ b/src/redturtle/volto/tests/test_content_types.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """Setup tests for this package."""
+
 from plone import api
 from plone.app.testing import setRoles
 from plone.app.testing import SITE_OWNER_NAME
diff --git a/src/redturtle/volto/tests/test_ct_link.py b/src/redturtle/volto/tests/test_ct_link.py
index 5fb981c1..6b645a76 100644
--- a/src/redturtle/volto/tests/test_ct_link.py
+++ b/src/redturtle/volto/tests/test_ct_link.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """Setup tests for this package."""
+
 from plone import api
 from plone.app.testing import setRoles
 from plone.app.testing import SITE_OWNER_NAME
diff --git a/src/redturtle/volto/tests/test_namechooser_customization.py b/src/redturtle/volto/tests/test_namechooser_customization.py
index 1f5a628a..2b736278 100644
--- a/src/redturtle/volto/tests/test_namechooser_customization.py
+++ b/src/redturtle/volto/tests/test_namechooser_customization.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """Setup tests for this package."""
+
 from plone import api
 from plone.app.testing import setRoles
 from plone.app.testing import TEST_USER_ID
diff --git a/src/redturtle/volto/tests/test_patch_absolutize_path.py b/src/redturtle/volto/tests/test_patch_absolutize_path.py
index ecfefaf7..8ad225b5 100644
--- a/src/redturtle/volto/tests/test_patch_absolutize_path.py
+++ b/src/redturtle/volto/tests/test_patch_absolutize_path.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """Setup tests for this package."""
+
 from plone import api
 from plone.app.testing import setRoles
 from plone.app.testing import TEST_USER_ID
diff --git a/src/redturtle/volto/tests/test_rss.py b/src/redturtle/volto/tests/test_rss.py
index 6095e477..a59d42bc 100644
--- a/src/redturtle/volto/tests/test_rss.py
+++ b/src/redturtle/volto/tests/test_rss.py
@@ -1,12 +1,12 @@
 # -*- coding: utf-8 -*-
 """Setup tests for this package."""
+
 from plone import api
 from plone.app.testing import setRoles
 from plone.app.testing import TEST_USER_ID
 from redturtle.volto.adapters.rss import CustomFeedItem
 from redturtle.volto.interfaces import ICustomFeedItem
 
-
 try:
     from plone.base.interfaces.syndication import IFeed
 except ModuleNotFoundError:
diff --git a/src/redturtle/volto/tests/test_setup.py b/src/redturtle/volto/tests/test_setup.py
index 3db707e9..c7e98fc6 100644
--- a/src/redturtle/volto/tests/test_setup.py
+++ b/src/redturtle/volto/tests/test_setup.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """Setup tests for this package."""
+
 from plone import api
 from plone.app.testing import setRoles
 from plone.app.testing import TEST_USER_ID
@@ -7,7 +8,6 @@
 
 import unittest
 
-
 try:
     from Products.CMFPlone.utils import get_installer
 except ImportError:
diff --git a/src/redturtle/volto/tests/test_spaces_in_id.py b/src/redturtle/volto/tests/test_spaces_in_id.py
new file mode 100644
index 00000000..3e91db86
--- /dev/null
+++ b/src/redturtle/volto/tests/test_spaces_in_id.py
@@ -0,0 +1,67 @@
+# -*- coding: utf-8 -*-
+"""Setup tests for this package."""
+
+from plone.app.testing import setRoles
+from plone.app.testing import SITE_OWNER_NAME
+from plone.app.testing import SITE_OWNER_PASSWORD
+from plone.app.testing import TEST_USER_ID
+from plone.restapi.testing import RelativeSession
+from redturtle.volto.testing import REDTURTLE_VOLTO_API_FUNCTIONAL_TESTING
+
+import unittest
+
+
+class TestCreation(unittest.TestCase):
+    layer = REDTURTLE_VOLTO_API_FUNCTIONAL_TESTING
+
+    def setUp(self):
+        self.app = self.layer["app"]
+        self.portal = self.layer["portal"]
+        self.portal_url = self.portal.absolute_url()
+        setRoles(self.portal, TEST_USER_ID, ["Manager"])
+
+        self.api_session = RelativeSession(self.portal_url)
+        self.api_session.headers.update({"Accept": "application/json"})
+        self.api_session.auth = (SITE_OWNER_NAME, SITE_OWNER_PASSWORD)
+
+    def test_fix_id_if_contains_spaces(self):
+        """Test that id with spaces is fixed"""
+
+        response = self.api_session.post(
+            self.portal_url,
+            json={
+                "@type": "Document",
+                "title": "My doc",
+                "id": "aa bb",
+            },
+        )
+
+        self.assertEqual(response.json()["id"], "aa-bb")
+
+        obj_url = response.json()["@id"]
+        response = self.api_session.patch(
+            obj_url,
+            json={"id": "aa bb"},
+        )
+
+        self.assertEqual(response.status_code, 204)
+
+        response = self.api_session.get(
+            obj_url,
+        )
+
+        self.assertEqual(response.json()["id"], "aa-bb-1")
+
+    def test_fix_id_if_contains_invalid_chars(self):
+        """Test that id with spaces is fixed"""
+
+        response = self.api_session.post(
+            self.portal_url,
+            json={
+                "@type": "Document",
+                "title": "My doc",
+                "id": "aàbbù",
+            },
+        )
+
+        self.assertEqual(response.status_code, 400)
diff --git a/src/redturtle/volto/types/adapters.py b/src/redturtle/volto/types/adapters.py
index 286b6a53..8ea3f284 100644
--- a/src/redturtle/volto/types/adapters.py
+++ b/src/redturtle/volto/types/adapters.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """JsonSchema providers."""
+
 from plone.restapi.types.adapters import TextLineJsonSchemaProvider as Base
 from plone.restapi.types.interfaces import IJsonSchemaProvider
 from redturtle.volto import _
diff --git a/src/redturtle/volto/upgrades.py b/src/redturtle/volto/upgrades.py
index d466f259..5d8f592f 100644
--- a/src/redturtle/volto/upgrades.py
+++ b/src/redturtle/volto/upgrades.py
@@ -13,7 +13,6 @@
 from uuid import uuid4
 from zope.schema import getFields
 
-
 try:
     from plone.base.utils import get_installer
 except Exception:
@@ -23,7 +22,6 @@
 import logging
 import transaction
 
-
 try:
     from collective.volto.blocksfield.field import BlocksField