diff --git a/odoo/addons/base/models/ir_model.py b/odoo/addons/base/models/ir_model.py
index efe8735564d..2a6d9fc2a00 100644
--- a/odoo/addons/base/models/ir_model.py
+++ b/odoo/addons/base/models/ir_model.py
@@ -632,7 +632,7 @@ class IrModelFields(models.Model):
         """ Return the ``ir.model.fields`` record corresponding to ``self.related``. """
         names = self.related.split(".")
         last = len(names) - 1
-        model_name = self.model
+        model_name = self.model or self.model_id.model
         for index, name in enumerate(names):
             field = self._get(model_name, name)
             if not field:
diff --git a/odoo/addons/base/tests/test_ir_model.py b/odoo/addons/base/tests/test_ir_model.py
index a613ce69fee..acc91faa21b 100644
--- a/odoo/addons/base/tests/test_ir_model.py
+++ b/odoo/addons/base/tests/test_ir_model.py
@@ -4,7 +4,7 @@
 from psycopg2 import IntegrityError
 
 from odoo.exceptions import ValidationError
-from odoo.tests.common import TransactionCase, HttpCase, tagged
+from odoo.tests.common import Form, TransactionCase, HttpCase, tagged
 from odoo.tools import mute_logger
 from odoo import Command
 
@@ -424,6 +424,19 @@ class TestIrModel(TransactionCase):
         self.assertEqual(monetary_field.currency_field, "x_good_currency",
                          "The currency field in monetary should have x_good_currency as name")
 
+@tagged('-at_install', 'post_install')
+class TestIrModelEdition(TransactionCase):
+    def test_new_ir_model_fields_related(self):
+        """Check that related field are handled correctly on new field"""
+        model = self.env['ir.model'].create({
+            'name': 'Bananas',
+            'model': 'x_bananas'
+        })
+        with self.debug_mode():
+            form = Form(self.env['ir.model.fields'].with_context(default_model_id=model.id))
+            form.related = 'id'
+            self.assertEqual(form.ttype, 'integer')
+
 @tagged('test_eval_context')
 class TestEvalContext(TransactionCase):