diff --git a/CHANGES.rst b/CHANGES.rst
index b8c7ad03..e6e15b2e 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,8 +4,8 @@ Changelog
 5.5.13 (unreleased)
 -------------------
 
-- Nothing changed yet.
-
+- Use custom creator criteria to list only creators present in the catalog to avoid an empty list when using LDAP and many_users flag
+  [folix-01]
 
 5.5.12 (2025-07-02)
 -------------------
@@ -33,7 +33,7 @@ Changelog
   [mamico]
 - Fix issue with event search in @querystring-search override:
   converting a timezone-aware DateTime to utcdatetime causes a problem when searching for
-  "today", as it shifts start=day x at 00:00 to start=day x-1 at 22:00 in GMT+2 timezone.  
+  "today", as it shifts start=day x at 00:00 to start=day x-1 at 22:00 in GMT+2 timezone.
   [lucabel]
 
 
@@ -116,7 +116,7 @@ Changelog
 - Add dependency with collective.volto.sitesettings.
   [cekk]
 
-  
+
 5.4.9 (2024-04-22)
 ------------------
 
diff --git a/src/redturtle/volto/configure.zcml b/src/redturtle/volto/configure.zcml
index af4992ce..8056e5c6 100644
--- a/src/redturtle/volto/configure.zcml
+++ b/src/redturtle/volto/configure.zcml
@@ -13,6 +13,7 @@
   <include package=".browser" />
   <include package=".restapi" />
   <include package=".types" />
+  <include package=".vocabularies" />
 
   <include file="indexers.zcml" />
   <include file="monkey.zcml" />
diff --git a/src/redturtle/volto/profiles/default/metadata.xml b/src/redturtle/volto/profiles/default/metadata.xml
index c3906f0b..6f079ea3 100644
--- a/src/redturtle/volto/profiles/default/metadata.xml
+++ b/src/redturtle/volto/profiles/default/metadata.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <metadata>
-  <version>4308</version>
+  <version>4309</version>
   <dependencies>
     <dependency>profile-plone.volto:default</dependency>
     <dependency>profile-plone.app.caching:with-caching-proxy</dependency>
diff --git a/src/redturtle/volto/profiles/default/registry/criteria.xml b/src/redturtle/volto/profiles/default/registry/criteria.xml
index 327be94e..eed45831 100644
--- a/src/redturtle/volto/profiles/default/registry/criteria.xml
+++ b/src/redturtle/volto/profiles/default/registry/criteria.xml
@@ -4,17 +4,21 @@
     i18n:domain="redturtle.volto">
 
 
-    <records interface="plone.app.querystring.interfaces.IQueryField"
-             prefix="plone.app.querystring.field.exclude_from_nav">
-        <value key="title" i18n:translate="">Show elements excluded from navigation</value>
-        <value key="description" i18n:translate="">Select False to show only elements not excluded from navigation.</value>
-        <value key="enabled">True</value>
-        <value key="sortable">False</value>
-        <value key="operations">
-            <element>plone.app.querystring.operation.boolean.isTrue</element>
-            <element>plone.app.querystring.operation.boolean.isFalse</element>
-        </value>
-       <value key="group" i18n:translate="">Metadata</value>
-    </records>
+  <records interface="plone.app.querystring.interfaces.IQueryField"
+            prefix="plone.app.querystring.field.exclude_from_nav">
+      <value key="title" i18n:translate="">Show elements excluded from navigation</value>
+      <value key="description" i18n:translate="">Select False to show only elements not excluded from navigation.</value>
+      <value key="enabled">True</value>
+      <value key="sortable">False</value>
+      <value key="operations">
+          <element>plone.app.querystring.operation.boolean.isTrue</element>
+          <element>plone.app.querystring.operation.boolean.isFalse</element>
+      </value>
+      <value key="group" i18n:translate="">Metadata</value>
+  </records>
+
+  <records interface="plone.app.querystring.interfaces.IQueryField" prefix="plone.app.querystring.field.Creator" purge="False">
+      <value key="vocabulary">redturtle.volto.vocabularies.Creators</value>
+  </records>
 
 </registry>
diff --git a/src/redturtle/volto/upgrades.py b/src/redturtle/volto/upgrades.py
index 28620d89..66170daa 100644
--- a/src/redturtle/volto/upgrades.py
+++ b/src/redturtle/volto/upgrades.py
@@ -2,11 +2,14 @@
 from Acquisition import aq_base
 from copy import deepcopy
 from plone import api
+from plone.app.querystring.interfaces import IQueryField
 from plone.app.upgrade.utils import installOrReinstallProduct
 from plone.dexterity.utils import iterSchemata
+from plone.registry.interfaces import IRegistry
 from plone.restapi.behaviors import IBlocks
 from redturtle.volto.setuphandlers import remove_custom_googlebot
 from uuid import uuid4
+from zope.component import getUtility
 from zope.schema import getFields
 
 
@@ -594,3 +597,11 @@ def should_reindex(blocks):
     logger.info(f"Reindex complete. Reindexed {len(reindexed)} contents:")
     for url in reindexed:
         logger.info(f"- {url}")
+
+
+def to_4309(context):
+    registry = getUtility(IRegistry)
+    settings = registry.forInterface(
+        IQueryField, prefix="plone.app.querystring.field.Creator"
+    )
+    settings.vocabulary = "redturtle.volto.vocabularies.Creators"
diff --git a/src/redturtle/volto/upgrades.zcml b/src/redturtle/volto/upgrades.zcml
index 79c501d4..2fa6bff3 100644
--- a/src/redturtle/volto/upgrades.zcml
+++ b/src/redturtle/volto/upgrades.zcml
@@ -256,4 +256,12 @@
       destination="4308"
       handler=".upgrades.to_4308"
       />
+  <genericsetup:upgradeStep
+      title="Change vocabulary for Creator criteria"
+      description=""
+      profile="redturtle.volto:default"
+      source="4308"
+      destination="4309"
+      handler=".upgrades.to_4309"
+      />
 </configure>
diff --git a/src/redturtle/volto/vocabularies/__init__.py b/src/redturtle/volto/vocabularies/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/src/redturtle/volto/vocabularies/configure.zcml b/src/redturtle/volto/vocabularies/configure.zcml
new file mode 100644
index 00000000..99b4d662
--- /dev/null
+++ b/src/redturtle/volto/vocabularies/configure.zcml
@@ -0,0 +1,14 @@
+<configure
+    xmlns="http://namespaces.zope.org/zope"
+    xmlns:genericsetup="http://namespaces.zope.org/genericsetup"
+    xmlns:i18n="http://namespaces.zope.org/i18n"
+    xmlns:plone="http://namespaces.plone.org/plone"
+    i18n_domain="redturtle.volto"
+    >
+
+  <utility
+      factory=".principals.CreatorsVocabulary"
+      name="redturtle.volto.vocabularies.Creators"
+      />
+
+</configure>
diff --git a/src/redturtle/volto/vocabularies/principals.py b/src/redturtle/volto/vocabularies/principals.py
new file mode 100644
index 00000000..91f0ad79
--- /dev/null
+++ b/src/redturtle/volto/vocabularies/principals.py
@@ -0,0 +1,11 @@
+from plone.app.vocabularies.catalog import KeywordsVocabulary
+from zope.interface import implementer
+from zope.schema.interfaces import IVocabularyFactory
+
+
+@implementer(IVocabularyFactory)
+class CreatorsVocabulary(KeywordsVocabulary):
+    keyword_index = "Creator"
+
+
+CreatorsVocabularyFactory = CreatorsVocabulary()