diff --git a/import_export_celery/admin_actions.py b/import_export_celery/admin_actions.py
index 2c06434..892f119 100644
--- a/import_export_celery/admin_actions.py
+++ b/import_export_celery/admin_actions.py
@@ -40,15 +40,14 @@ def run_export_job_action(modeladmin, request, queryset):
 
 
 def create_export_job_action(modeladmin, request, queryset):
-    if queryset:
-        arbitrary_obj = queryset.first()
+    if queryset is not None:
         ej = ExportJob.objects.create(
-            app_label=arbitrary_obj._meta.app_label,
-            model=arbitrary_obj._meta.model_name,
+            app_label=queryset.model._meta._meta.app_label,
+            model=queryset.model._meta._meta.model_name,
             queryset=json.dumps(
                 [
-                    str(obj.pk) if isinstance(obj.pk, UUID) else obj.pk
-                    for obj in queryset
+                    str(pk) if isinstance(pk, UUID) else pk
+                    for pk in queryset.values_list("pk", flat=True)
                 ]
             ),
             site_of_origin=request.scheme + "://" + request.get_host(),
diff --git a/import_export_celery/tasks.py b/import_export_celery/tasks.py
index ef3083b..0f786d9 100644
--- a/import_export_celery/tasks.py
+++ b/import_export_celery/tasks.py
@@ -1,5 +1,6 @@
 # Author: Timothy Hobbs <timothy <at> hobbs.cz>
 from django.utils import timezone
+from django.db.models import QuerySet
 import os
 
 from celery import shared_task
@@ -215,7 +216,7 @@ def run_export_job(pk):
     export_job = models.ExportJob.objects.get(pk=pk)
     resource_class = export_job.get_resource_class()
     queryset = export_job.get_queryset()
-    qs_len = len(queryset)
+    qs_len = queryset.count() if isinstance(queryset, QuerySet) else len(queryset)
 
     class Resource(resource_class):
         def __init__(self, export_job, *args, **kwargs):