diff --git a/netbox/ipam/forms/bulk_import.py b/netbox/ipam/forms/bulk_import.py
index e4190a66c..41604f0e4 100644
--- a/netbox/ipam/forms/bulk_import.py
+++ b/netbox/ipam/forms/bulk_import.py
@@ -1,5 +1,6 @@
 from django import forms
 from django.contrib.contenttypes.models import ContentType
+from django.forms import IntegerField
 
 from dcim.models import Device, Interface, Site
 from extras.forms import CustomFieldModelCSVForm
@@ -83,17 +84,12 @@ class AggregateCSVForm(CustomFieldModelCSVForm):
 
 
 class ASNCSVForm(CustomFieldModelCSVForm):
-    slug = SlugField()
+    asn = IntegerField()
     rir = CSVModelChoiceField(
         queryset=RIR.objects.all(),
         to_field_name='name',
         help_text='Assigned RIR'
     )
-    sites = CSVModelChoiceField(
-        queryset=Site.objects.all(),
-        to_field_name='name',
-        help_text='Assigned site'
-    )
     tenant = CSVModelChoiceField(
         queryset=Tenant.objects.all(),
         required=False,