diff --git a/fieldservice_activity/__manifest__.py b/fieldservice_activity/__manifest__.py
index 71ecfcbbcf..5deb64fb72 100644
--- a/fieldservice_activity/__manifest__.py
+++ b/fieldservice_activity/__manifest__.py
@@ -5,7 +5,7 @@
     "name": "Field Service Activity",
     "summary": """Field Service Activities are a set of actions
      that need to be performed on a service order""",
-    "version": "12.0.1.0.0",
+    "version": "13.0.1.0.0",
     "category": "Field Service",
     "license": "AGPL-3",
     "author": "Open Source Integrators, Odoo Community Association (OCA)",
diff --git a/fieldservice_activity/models/fsm_activity.py b/fieldservice_activity/models/fsm_activity.py
index a7fee4914d..52ebccd230 100644
--- a/fieldservice_activity/models/fsm_activity.py
+++ b/fieldservice_activity/models/fsm_activity.py
@@ -6,7 +6,7 @@
 from odoo import fields, models
 
 
-class FSMActiity(models.Model):
+class FSMActivity(models.Model):
     _name = "fsm.activity"
     _description = "Field Service Activity"
 
@@ -35,13 +35,11 @@ class FSMActiity(models.Model):
         default="todo",
     )
 
-    @api.multi
     def action_done(self):
         self.completed = True
         self.completed_on = datetime.now()
         self.completed_by = self.env.user
         self.state = "done"
 
-    @api.multi
     def action_cancel(self):
         self.state = "cancel"
diff --git a/fieldservice_activity/models/fsm_order.py b/fieldservice_activity/models/fsm_order.py
index e8d4389016..a642b58eac 100644
--- a/fieldservice_activity/models/fsm_order.py
+++ b/fieldservice_activity/models/fsm_order.py
@@ -10,7 +10,6 @@ class FSMOrder(models.Model):
 
     order_activity_ids = fields.One2many("fsm.activity", "fsm_order_id", "Activites")
 
-    @api.multi
     @api.onchange("template_id")
     def _onchange_template_id(self):
         res = super()._onchange_template_id()
@@ -34,7 +33,6 @@ def _onchange_template_id(self):
                 rec.template_id.temp_activity_ids.write({"fsm_template_id": False})
         return res
 
-    @api.multi
     def action_complete(self):
         res = super().action_complete()
         for activity_id in self.order_activity_ids: