diff --git a/project_type/models/project_project.py b/project_type/models/project_project.py
index fe7e92f824..1a15ad1404 100644
--- a/project_type/models/project_project.py
+++ b/project_type/models/project_project.py
@@ -9,6 +9,6 @@ class ProjectProject(models.Model):
     type_id = fields.Many2one(
         comodel_name="project.type",
         string="Type",
-        copy=False,
+        copy=True,
         domain="[('project_ok', '=', True)]",
     )
diff --git a/project_type/models/project_task.py b/project_type/models/project_task.py
index 5444ca5954..36ab8574d2 100644
--- a/project_type/models/project_task.py
+++ b/project_type/models/project_task.py
@@ -7,5 +7,8 @@ class ProjectTask(models.Model):
     _inherit = "project.task"
 
     type_id = fields.Many2one(
-        comodel_name="project.type", string="Type", domain="[('task_ok', '=', True)]"
+        comodel_name="project.type",
+        string="Type",
+        domain="[('task_ok', '=', True)]",
+        copy=True,
     )