diff --git a/opds/models.py b/opds/models.py
index 494ade8..c7da193 100644
--- a/opds/models.py
+++ b/opds/models.py
@@ -1,7 +1,6 @@
 from django.db import models
-from cms.models import CMSPlugin, Model
 
-class Catalogue(Model):
+class Catalogue(models.Model):
     name = models.CharField(
         max_length=200,
         unique=True