diff --git a/ereuse_devicehub/resources/action/views.py b/ereuse_devicehub/resources/action/views.py
index f16f8947..2d71b4fd 100644
--- a/ereuse_devicehub/resources/action/views.py
+++ b/ereuse_devicehub/resources/action/views.py
@@ -33,7 +33,7 @@ def save_json(req_json, tmp_snapshots, user):
     month = now.month
     day = now.day
     hour = now.hour
-    minutes = now.min
+    minutes = now.minute
 
     name_file = f"{year}-{month}-{day}-{hour}-{minutes}_{user}_{uuid}.json"
     path_dir_base = os.path.join(tmp_snapshots, user)
diff --git a/ereuse_devicehub/resources/device/models.py b/ereuse_devicehub/resources/device/models.py
index 028a8bf6..682327bb 100644
--- a/ereuse_devicehub/resources/device/models.py
+++ b/ereuse_devicehub/resources/device/models.py
@@ -28,7 +28,7 @@ from teal.resource import url_for_resource
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.enums import BatteryTechnology, CameraFacing, ComputerChassis, \
     DataStorageInterface, DisplayTech, PrinterTechnology, RamFormat, RamInterface, Severity, TransferState
-from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing
+from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing, listener_reset_field_updated_in_actual_time
 from ereuse_devicehub.resources.user.models import User
 
 
@@ -881,3 +881,6 @@ class Manufacturer(db.Model):
                 'COPY common.manufacturer FROM STDIN (FORMAT csv)',
                 f
             )
+
+
+listener_reset_field_updated_in_actual_time(Device)
diff --git a/ereuse_devicehub/resources/models.py b/ereuse_devicehub/resources/models.py
index 721e9258..e079269f 100644
--- a/ereuse_devicehub/resources/models.py
+++ b/ereuse_devicehub/resources/models.py
@@ -1,4 +1,5 @@
 from datetime import datetime, timezone
+from flask_sqlalchemy import event
 
 from ereuse_devicehub.db import db
 
@@ -34,3 +35,12 @@ class Thing(db.Model):
         # to be able to use sorted containers
         self.created = kwargs.get('created', datetime.now(timezone.utc))
         super().__init__(**kwargs)
+
+
+def update_object_timestamp(mapper, connection, thing_obj):
+    """ This function update the stamptime of field updated """
+    thing_obj.updated = datetime.now(timezone.utc)
+
+def listener_reset_field_updated_in_actual_time(thing_obj):
+    """ This function launch a event than listen like a signal when some object is saved """
+    event.listen(thing_obj, 'before_update', update_object_timestamp, propagate=True)
diff --git a/tests/test_action.py b/tests/test_action.py
index ba99996d..ba095685 100644
--- a/tests/test_action.py
+++ b/tests/test_action.py
@@ -238,6 +238,8 @@ def test_generic_action(action_model_state: Tuple[models.Action, states.Trading]
     device, _ = user.get(res=Device, item=snapshot['device']['id'])
     assert device['actions'][-1]['id'] == action['id']
     assert device['physical'] == state.name
+    # Check if the update of device is changed
+    assert snapshot['device']['updated'] != device['updated']
 
 
 @pytest.mark.mvp
diff --git a/tests/test_device.py b/tests/test_device.py
index 685b08b0..60389d8f 100644
--- a/tests/test_device.py
+++ b/tests/test_device.py
@@ -53,7 +53,7 @@ def test_device_model():
     # Removing a component from pc doesn't delete the component
     pc.components.remove(net)
     db.session.commit()
-    pc = d.Device.query.first()  # this is the same as querying for d.Desktop directly
+    pc = d.Device.query.filter_by(id=pc.id).first()  # this is the same as querying for d.Desktop directly
     assert pc.components == {graphic}
     network_adapter = d.NetworkAdapter.query.one()
     assert network_adapter not in pc.components
diff --git a/tests/test_snapshot.py b/tests/test_snapshot.py
index 6b85d94d..0c4bbf1d 100644
--- a/tests/test_snapshot.py
+++ b/tests/test_snapshot.py
@@ -104,6 +104,25 @@ def test_snapshot_post(user: UserClient):
     assert rate['snapshot']['id'] == snapshot['id']
 
 
+@pytest.mark.mvp
+def test_snapshot_update_timefield_updated(user: UserClient):
+    """
+    Tests for check if one computer have the time mark updated when one component of it is updated
+    """
+    computer1 = file('1-device-with-components.snapshot')
+    snapshot = snapshot_and_check(user,
+                                  computer1,
+                                  action_types=(BenchmarkProcessor.t,
+                                                RateComputer.t),
+                                  perform_second_snapshot=False)
+    computer2 = file('2-second-device-with-components-of-first.snapshot')
+    snapshot_and_check(user, computer2, action_types=('Remove', 'RateComputer'),
+                       perform_second_snapshot=False)
+    pc1_id = snapshot['device']['id']
+    pc1, _ = user.get(res=m.Device, item=pc1_id)
+    assert pc1['updated'] != snapshot['device']['updated']
+
+
 @pytest.mark.mvp
 def test_snapshot_component_add_remove(user: UserClient):
     """Tests adding and removing components and some don't generate HID.
@@ -130,6 +149,7 @@ def test_snapshot_component_add_remove(user: UserClient):
                                    perform_second_snapshot=False)
     pc1_id = snapshot1['device']['id']
     pc1, _ = user.get(res=m.Device, item=pc1_id)
+    update1_pc1 = pc1['updated']
     # Parent contains components
     assert tuple(c['serialNumber'] for c in pc1['components']) == ('p1c1s', 'p1c2s', 'p1c3s')
     # Components contain parent
@@ -152,6 +172,10 @@ def test_snapshot_component_add_remove(user: UserClient):
     pc2_id = snapshot2['device']['id']
     pc1, _ = user.get(res=m.Device, item=pc1_id)
     pc2, _ = user.get(res=m.Device, item=pc2_id)
+    # Check if the update_timestamp is updated
+    update1_pc2 = pc2['updated']
+    update2_pc1 = pc1['updated']
+    assert update1_pc1 != update2_pc1
     # PC1
     assert tuple(c['serialNumber'] for c in pc1['components']) == ('p1c1s', 'p1c3s')
     assert all(c['parent'] == pc1_id for c in pc1['components'])
@@ -174,6 +198,12 @@ def test_snapshot_component_add_remove(user: UserClient):
     snapshot_and_check(user, s3, ('Remove', 'RateComputer'), perform_second_snapshot=False)
     pc1, _ = user.get(res=m.Device, item=pc1_id)
     pc2, _ = user.get(res=m.Device, item=pc2_id)
+    # Check if the update_timestamp is updated
+    update2_pc2 = pc2['updated']
+    update3_pc1 = pc1['updated']
+    assert not update3_pc1 in [update1_pc1, update2_pc1]
+    assert update1_pc2 != update2_pc2
+
     # PC1
     assert {c['serialNumber'] for c in pc1['components']} == {'p1c2s', 'p1c3s'}
     assert all(c['parent'] == pc1_id for c in pc1['components'])
@@ -214,6 +244,11 @@ def test_snapshot_component_add_remove(user: UserClient):
     snapshot_and_check(user, s4, ('RateComputer',), perform_second_snapshot=False)
     pc1, _ = user.get(res=m.Device, item=pc1_id)
     pc2, _ = user.get(res=m.Device, item=pc2_id)
+    # Check if the update_timestamp is updated
+    update3_pc2 = pc2['updated']
+    update4_pc1 = pc1['updated']
+    assert not update4_pc1 in [update1_pc1, update2_pc1, update3_pc1]
+    assert update3_pc2 == update2_pc2
     # PC 0: p1c3s, p1c4s. PC1: p2c1s
     assert {c['serialNumber'] for c in pc1['components']} == {'p1c3s', 'p1c4s'}
     assert all(c['parent'] == pc1_id for c in pc1['components'])
@@ -496,6 +531,7 @@ def test_save_snapshot_in_file(app: Devicehub, user: UserClient):
     snapshot = {'software': '', 'version': '', 'uuid': ''}
     if files:
         path_snapshot = os.path.join(path_dir_base, files[0])
+        assert not "0001-01-01 00:00:00" in path_snapshot
         with open(path_snapshot) as file_snapshot:
             snapshot = json.loads(file_snapshot.read())