diff --git a/bugsink/urls.py b/bugsink/urls.py
index b5434f4..976ea81 100644
--- a/bugsink/urls.py
+++ b/bugsink/urls.py
@@ -17,7 +17,7 @@ from files.views import chunk_upload, artifact_bundle_assemble, api_root, api_ca
 from bugsink.decorators import login_exempt
 
 from events.api_views import EventViewSet
-from issues.api_views import IssueViewSet, GroupingViewSet
+from issues.api_views import IssueViewSet
 from projects.api_views import ProjectViewSet
 from releases.api_views import ReleaseViewSet
 from teams.api_views import TeamViewSet
@@ -34,7 +34,6 @@ admin.site.index_title = "Admin"  # everyone calls this the "admin" anyway. Let'
 api_router = routers.DefaultRouter()
 api_router.register(r'events', EventViewSet)
 api_router.register(r'issues', IssueViewSet)
-api_router.register(r'groupings', GroupingViewSet)
 api_router.register(r'projects', ProjectViewSet)
 api_router.register(r'releases', ReleaseViewSet)
 api_router.register(r'teams', TeamViewSet)
diff --git a/issues/api_views.py b/issues/api_views.py
index ca27d41..23ad92b 100644
--- a/issues/api_views.py
+++ b/issues/api_views.py
@@ -2,8 +2,8 @@ from django.shortcuts import get_object_or_404
 from rest_framework import viewsets
 from rest_framework.exceptions import ValidationError
 
-from .models import Issue, Grouping
-from .serializers import IssueSerializer, GroupingSerializer
+from .models import Issue
+from .serializers import IssueSerializer
 
 
 class IssueViewSet(viewsets.ReadOnlyModelViewSet):
@@ -55,10 +55,3 @@ class IssueViewSet(viewsets.ReadOnlyModelViewSet):
         obj = get_object_or_404(queryset, **filter_kwargs)
         self.check_object_permissions(self.request, obj)
         return obj
-
-
-class GroupingViewSet(viewsets.ReadOnlyModelViewSet):
-    queryset = Grouping.objects.all().order_by('grouping_key')  # TBD
-    serializer_class = GroupingSerializer
-
-    # TODO: the idea of required filter-fields when listing.
diff --git a/issues/serializers.py b/issues/serializers.py
index 0e9d127..898e315 100644
--- a/issues/serializers.py
+++ b/issues/serializers.py
@@ -1,6 +1,6 @@
 from rest_framework import serializers
 
-from .models import Issue, Grouping
+from .models import Issue
 
 
 class IssueSerializer(serializers.ModelSerializer):
@@ -33,13 +33,3 @@ class IssueSerializer(serializers.ModelSerializer):
             "is_muted",
             # "unmute_on_volume_based_conditions",  too "raw"? i.e. too implementation-tied?
         ]
-
-
-class GroupingSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = Grouping
-        fields = [
-            "project",
-            "grouping_key",
-            "issue",
-        ]