diff --git a/courses/models.py b/courses/models.py
index eacc7e6..613c2c3 100755
--- a/courses/models.py
+++ b/courses/models.py
@@ -109,7 +109,7 @@ class CourseManager(models.Manager):
             course.slug = slug
             course.save()
 
-        except ObjectDoesNotExist:
+        except models.Model.DoesNotExist:
             kwargs['slug'] = slug
             course = self.create(**kwargs)