diff --git a/netbox/ipam/filtersets.py b/netbox/ipam/filtersets.py
index a128b6acc..68316f2a8 100644
--- a/netbox/ipam/filtersets.py
+++ b/netbox/ipam/filtersets.py
@@ -7,6 +7,8 @@ from django.utils.translation import gettext as _
 from netaddr.core import AddrFormatError
 
 from dcim.models import Device, Interface, Region, Site, SiteGroup
+from drf_spectacular.utils import extend_schema_field
+from drf_spectacular.types import OpenApiTypes
 from netbox.filtersets import ChangeLoggedModelFilterSet, OrganizationalModelFilterSet, NetBoxModelFilterSet
 from tenancy.filtersets import TenancyFilterSet
 from utilities.filters import (
@@ -284,17 +286,17 @@ class PrefixFilterSet(NetBoxModelFilterSet, TenancyFilterSet):
         to_field_name='rd',
         label=_('VRF (RD)'),
     )
-    present_in_vrf_id = django_filters.ModelChoiceFilter(
+    present_in_vrf_id = extend_schema_field({'type': 'string', 'description': 'VRF'})(django_filters.ModelChoiceFilter(
         queryset=VRF.objects.all(),
         method='filter_present_in_vrf',
         label=_('VRF')
-    )
-    present_in_vrf = django_filters.ModelChoiceFilter(
+    ))
+    present_in_vrf = extend_schema_field({'type': 'string', 'description': 'VRF (RD)'})(django_filters.ModelChoiceFilter(
         queryset=VRF.objects.all(),
         method='filter_present_in_vrf',
         to_field_name='rd',
         label=_('VRF (RD)'),
-    )
+    ))
     region_id = TreeNodeMultipleChoiceFilter(
         queryset=Region.objects.all(),
         field_name='site__region',
@@ -526,17 +528,17 @@ class IPAddressFilterSet(NetBoxModelFilterSet, TenancyFilterSet):
         to_field_name='rd',
         label=_('VRF (RD)'),
     )
-    present_in_vrf_id = django_filters.ModelChoiceFilter(
+    present_in_vrf_id = extend_schema_field({'type': 'string', 'description': 'VRF'})(django_filters.ModelChoiceFilter(
         queryset=VRF.objects.all(),
         method='filter_present_in_vrf',
         label=_('VRF')
-    )
-    present_in_vrf = django_filters.ModelChoiceFilter(
+    ))
+    present_in_vrf = extend_schema_field({'type': 'string', 'description': 'VRF (RD)'})(django_filters.ModelChoiceFilter(
         queryset=VRF.objects.all(),
         method='filter_present_in_vrf',
         to_field_name='rd',
         label=_('VRF (RD)'),
-    )
+    ))
     device = MultiValueCharFilter(
         method='filter_device',
         field_name='name',
@@ -907,14 +909,14 @@ class VLANFilterSet(NetBoxModelFilterSet, TenancyFilterSet):
         choices=VLANStatusChoices,
         null_value=None
     )
-    available_on_device = django_filters.ModelChoiceFilter(
+    available_on_device = extend_schema_field(OpenApiTypes.STR)(django_filters.ModelChoiceFilter(
         queryset=Device.objects.all(),
         method='get_for_device'
-    )
-    available_on_virtualmachine = django_filters.ModelChoiceFilter(
+    ))
+    available_on_virtualmachine = extend_schema_field(OpenApiTypes.STR)(django_filters.ModelChoiceFilter(
         queryset=VirtualMachine.objects.all(),
         method='get_for_virtualmachine'
-    )
+    ))
     l2vpn_id = django_filters.ModelMultipleChoiceFilter(
         field_name='l2vpn_terminations__l2vpn',
         queryset=L2VPN.objects.all(),