diff --git a/tests/test_onetoone_with_inheritance.py b/tests/test_onetoone_with_inheritance.py
index d58ffc415..3b9e24dbc 100644
--- a/tests/test_onetoone_with_inheritance.py
+++ b/tests/test_onetoone_with_inheritance.py
@@ -8,7 +8,7 @@ from tests.models import RESTFrameworkModel
 
 
 # Models
-from tests.test_multitable_inheritance import ChildModel, DerivedModelSerializer
+from tests.test_multitable_inheritance import ChildModel
 
 
 class ChildAssociatedModel(RESTFrameworkModel):