diff --git a/netbox/dcim/forms.py b/netbox/dcim/forms.py
index 048b0da4b..40a7c775e 100644
--- a/netbox/dcim/forms.py
+++ b/netbox/dcim/forms.py
@@ -1543,7 +1543,7 @@ class InterfaceCSVForm(forms.ModelForm):
     )
     lag = FlexibleModelChoiceField(
         queryset=Interface.objects.filter(form_factor=IFACE_FF_LAG),
-        to_field_name='name',
+        to_field_name='lag',
         required=False,
         help_text='Lag Name or ID of interface',
         error_messages={'invalid_choice': 'Lag not found.'}