diff --git a/printing_auto_base/models/printing_auto.py b/printing_auto_base/models/printing_auto.py
index fe1d13a..5f3ed8b 100644
--- a/printing_auto_base/models/printing_auto.py
+++ b/printing_auto_base/models/printing_auto.py
@@ -19,6 +19,7 @@ class PrintingAuto(models.Model):
     _description = "Printing Auto"
 
     name = fields.Char(string="Name", required=True)
+    model = fields.Char(string="Related Document Model", required=True)
 
     data_source = fields.Selection(
         [
diff --git a/printing_auto_base/tests/common.py b/printing_auto_base/tests/common.py
index 1cd0d11..847b7e2 100644
--- a/printing_auto_base/tests/common.py
+++ b/printing_auto_base/tests/common.py
@@ -50,6 +50,7 @@ class TestPrintingAutoCommon(common.SavepointCase):
 
     @classmethod
     def _create_printing_auto(cls, vals):
+        vals.setdefault("model", "printing.auto")
         return cls.env["printing.auto"].create(vals)
 
     @classmethod