diff --git a/django_seed/seeder.py b/django_seed/seeder.py
index 07d8e97..02fcb2c 100644
--- a/django_seed/seeder.py
+++ b/django_seed/seeder.py
@@ -38,6 +38,10 @@ def guess_field_formatters(self, faker):
 
         for field in model._meta.fields:
             field_name = field.name
+
+            if field_name.endswith('_ptr'):
+                continue
+
             if isinstance(field, (ForeignKey, ManyToManyField, OneToOneField)):
                 formatters[field_name] = self.build_relation(field, field.rel.to)
                 continue