diff --git a/issue7461002_1.diff b/issue7461002_1.diff
new file mode 100644
index 0000000..81b0bc3
--- /dev/null
+++ b/issue7461002_1.diff
@@ -0,0 +1,18 @@
+Index: trytond/trytond/modules/project_plan/allocation.py
+===================================================================
+
+--- a/trytond/trytond/modules/project_plan/allocation.py
++++ b/trytond/trytond/modules/project_plan/allocation.py
+@@ -11,9 +11,9 @@
+     __name__ = 'project.allocation'
+     _rec_name = 'employee'
+     employee = fields.Many2One('company.employee', 'Employee', required=True,
+-            select=True)
++            select=True, ondelete='CASCADE')
+     work = fields.Many2One('project.work', 'Work', required=True,
+-            select=True)
++            select=True, ondelete='CASCADE')
+     percentage = fields.Float('Percentage', digits=(16, 2), required=True)
+
+     @classmethod
+
diff --git a/series b/series
index 6e048fc..802b3f6 100644
--- a/series
+++ b/series
@@ -27,3 +27,4 @@ issue13411002_1.diff
 issue9511002_1.diff
 issue8481003_1.diff
 issue158_323.diff
+issue7461002_1.diff