diff --git a/froide/foirequest/documents.py b/froide/foirequest/documents.py
index 6274c98e0..0ac98fd1c 100644
--- a/froide/foirequest/documents.py
+++ b/froide/foirequest/documents.py
@@ -50,6 +50,8 @@ class FoiRequestDocument(Document):
     team = fields.IntegerField(attr="team_id")
 
     public = fields.BooleanField()
+    project = fields.IntegerField(attr="project_id")
+    project_order = fields.IntegerField()
 
     class Django:
         model = FoiRequest
diff --git a/froide/foirequest/filters.py b/froide/foirequest/filters.py
index bf95cd77b..8d8ad0ce0 100644
--- a/froide/foirequest/filters.py
+++ b/froide/foirequest/filters.py
@@ -246,6 +246,10 @@ class BaseFoiRequestFilterSet(BaseSearchFilterSet):
         widget=BootstrapSelect,
         method="add_sort",
     )
+    hide_project_duplicates = django_filters.BooleanFilter(
+        label=_("hide project duplicated"),
+        method="filter_hide_project_duplicates",
+    )
 
     class Meta:
         model = FoiRequest
@@ -326,6 +330,16 @@ def add_sort(self, qs, name, value):
             return qs.add_sort("%s_message" % value)
         return qs
 
+    def filter_hide_project_duplicates(self, qs, name, value):
+        if value:
+            return self.apply_filter(
+                qs,
+                name,
+                Q("bool", must_not={"exists": {"field": "project"}})
+                | Q("term", project_order=0),
+            )
+        return qs
+
 
 class FoiRequestFilterSet(BaseFoiRequestFilterSet):
     pass
diff --git a/froide/foirequest/models/request.py b/froide/foirequest/models/request.py
index b278a7e98..b4fa04873 100644
--- a/froide/foirequest/models/request.py
+++ b/froide/foirequest/models/request.py
@@ -110,15 +110,6 @@ def get_queryset(self):
     def by_last_update(self):
         return self.get_queryset().order_by("-last_message")
 
-    def for_list_view(self):
-        return (
-            self.by_last_update()
-            .filter(
-                same_as__isnull=True,
-            )
-            .filter(models.Q(project__isnull=True) | models.Q(project_order=0))
-        )
-
     def get_resolution_count_by_public_body(self, obj):
         from ..filters import REVERSE_FILTER_DICT
 
@@ -633,12 +624,7 @@ def is_public(self):
         return self.visibility == self.VISIBILITY.VISIBLE_TO_PUBLIC
 
     def in_public_search_index(self):
-        return (
-            self.is_public()
-            and self.is_foi
-            and self.same_as_id is None
-            and (self.project_id is None or self.project_order == 0)
-        )
+        return self.is_public() and self.is_foi and self.same_as_id is None
 
     def get_redaction_regexes(self):
         from ..utils import get_foi_mail_domains
diff --git a/froide/foirequest/views/list_requests.py b/froide/foirequest/views/list_requests.py
index bad7bdac7..756bed0cb 100644
--- a/froide/foirequest/views/list_requests.py
+++ b/froide/foirequest/views/list_requests.py
@@ -5,6 +5,8 @@
 from django.urls import reverse
 from django.utils.translation import gettext_lazy as _
 
+from elasticsearch_dsl.query import Q
+
 from froide.helper.search.views import BaseSearchView
 from froide.publicbody.models import Jurisdiction
 
@@ -38,7 +40,14 @@ class BaseListRequestView(BaseSearchView):
     filterset = FoiRequestFilterSet
 
     def get_base_search(self):
-        return super().get_base_search().filter("term", public=True)
+        base_search = super().get_base_search().filter("term", public=True)
+        # TODO: move this into facet so it is not removed if other filter are applied, e.g. through the filter-dropdowns
+        if not self.request.GET.get("show_project_requests"):
+            base_search = base_search.filter(
+                Q("bool", must_not={"exists": {"field": "project"}})
+                | Q("term", project_order=0)
+            )
+        return base_search
 
 
 class ListRequestView(BaseListRequestView):