diff --git a/sub_project/__init__.py b/sub_project/__init__.py
old mode 100644
new mode 100755
diff --git a/sub_project/__manifest__.py b/sub_project/__manifest__.py
old mode 100644
new mode 100755
diff --git a/sub_project/__pycache__/__init__.cpython-36.pyc b/sub_project/__pycache__/__init__.cpython-36.pyc
new file mode 100755
index 0000000..07b288b
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diff --git a/sub_project/models/__init__.py b/sub_project/models/__init__.py
old mode 100644
new mode 100755
diff --git a/sub_project/models/__pycache__/__init__.cpython-36.pyc b/sub_project/models/__pycache__/__init__.cpython-36.pyc
new file mode 100755
index 0000000..db5f834
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diff --git a/sub_project/models/__pycache__/sub_project.cpython-36.pyc b/sub_project/models/__pycache__/sub_project.cpython-36.pyc
new file mode 100755
index 0000000..04b8db2
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diff --git a/sub_project/models/sub_project.py b/sub_project/models/sub_project.py
old mode 100644
new mode 100755
diff --git a/sub_project/views/sub_project.xml b/sub_project/views/sub_project.xml
old mode 100644
new mode 100755
index 51a8219..3c1506b
--- a/sub_project/views/sub_project.xml
+++ b/sub_project/views/sub_project.xml
@@ -14,7 +14,7 @@
                                 <field name="is_sub_project"/>
                             </group>
                             <group>
-                                <field name="parent_project"
+                                <field name="parent_project" attrs="{'invisible': [('is_sub_project', '=', False)], 'required': [('is_sub_project', '=', True)]}"
                                        options="{'no_open': True, 'no_create': True, 'no_create_edit': True}"/>
                             </group>
                         </page>