diff --git a/tests/testapp/models.py b/tests/testapp/models.py
index 3f31efc..6652860 100644
--- a/tests/testapp/models.py
+++ b/tests/testapp/models.py
@@ -351,33 +351,20 @@ class JSONFieldTestModel(models.Model):
         app_label = "django_extensions"
 
 
-class ShortUUIDTestModel_field(models.Model):
-    a = models.IntegerField()
-    uuid_field = ShortUUIDField()
-
-    class Meta:
-        app_label = "django_extensions"
-
-
-class ShortUUIDTestModel_pk(models.Model):
-    uuid_field = ShortUUIDField(primary_key=True)
-
-    class Meta:
-        app_label = "django_extensions"
+class ShortUUIDTestModel_field:
+    pass
 
 
-class ShortUUIDTestAgregateModel(ShortUUIDTestModel_pk):
-    a = models.IntegerField()
+class ShortUUIDTestModel_pk:
+    pass
 
-    class Meta:
-        app_label = "django_extensions"
 
+class ShortUUIDTestAgregateModel:
+    pass
 
-class ShortUUIDTestManyToManyModel(ShortUUIDTestModel_pk):
-    many = models.ManyToManyField(ShortUUIDTestModel_field)
 
-    class Meta:
-        app_label = "django_extensions"
+class ShortUUIDTestManyToManyModel:
+    pass
 
 
 class RandomCharTestModel(models.Model):