diff --git a/netbox/dcim/filters.py b/netbox/dcim/filters.py
index 4d050d50d..24ba14f4c 100644
--- a/netbox/dcim/filters.py
+++ b/netbox/dcim/filters.py
@@ -616,11 +616,9 @@ class InterfaceListFilter(django_filters.FilterSet):
         fields = ['form_factor', 'enabled', 'mtu']
 
     def filter_site(self, queryset, name, value):
-        #try:
-        device = Device.objects.filter(**{name: value}).distinct()
-        return queryset
-        #except Device.DoesNotExist:
-        #    return queryset.none()
+        if not value.strip():
+            return queryset
+        return queryset.filter(device_id__device__site__slug=value)
     
     def filter_role(self, queryset, name, value):
         try: