fix bugs
diff --git a/plstackapi/planetstack/urls.py b/plstackapi/planetstack/urls.py
index 5316440..39b4a78 100644
--- a/plstackapi/planetstack/urls.py
+++ b/plstackapi/planetstack/urls.py
@@ -3,7 +3,7 @@
 # Uncomment the next two lines to enable the admin:
 from django.contrib import admin
 from plstackapi.planetstack.views.roles import RoleListCreate, RoleRetrieveUpdateDestroy
-from plstackapi.planetstack.views.roles import SiteListCreate, SiteRetrieveUpdateDestroy
+from plstackapi.planetstack.views.sites import SiteListCreate, SiteRetrieveUpdateDestroy
 from plstackapi.planetstack.views.api_root import api_root
 from plstackapi.planetstack.models import Site
 from rest_framework import generics