diff --git a/netbox/utilities/api.py b/netbox/utilities/api.py
index 50bb033e481..b53edf53ae0 100644
--- a/netbox/utilities/api.py
+++ b/netbox/utilities/api.py
@@ -27,6 +27,13 @@ def get_serializer_for_model(model, prefix=''):
     # Serializers for Django's auth models are in the users app
     if app_name == 'auth':
         app_name = 'users'
+    # Account for changes using Proxy model
+    if app_name == 'users':
+        if model_name == 'NetBoxUser':
+            model_name = 'User'
+        elif model_name == 'NetBoxGroup':
+            model_name = 'Group'
+
     serializer_name = f'{app_name}.api.serializers.{prefix}{model_name}Serializer'
     try:
         return dynamic_import(serializer_name)
diff --git a/netbox/utilities/utils.py b/netbox/utilities/utils.py
index f3f8c7c5042..05597b80c9b 100644
--- a/netbox/utilities/utils.py
+++ b/netbox/utilities/utils.py
@@ -52,6 +52,8 @@ def get_viewname(model, action=None, rest_api=False):
             # Alter the app_label for group and user model_name to point to users app
             if app_label == 'auth' and model_name in ['group', 'user']:
                 app_label = 'users'
+            if app_label == 'users' and model._meta.proxy and model_name in ['netboxuser', 'netboxgroup']:
+                model_name = model._meta.proxy_for_model._meta.model_name
 
             viewname = f'{app_label}-api:{model_name}'
         # Append the action, if any