diff --git a/src/powerapi/processor/pre/k8s/k8s_pre_processor_actor.py b/src/powerapi/processor/pre/k8s/k8s_pre_processor_actor.py
index 841907fc..c5baecb4 100644
--- a/src/powerapi/processor/pre/k8s/k8s_pre_processor_actor.py
+++ b/src/powerapi/processor/pre/k8s/k8s_pre_processor_actor.py
@@ -42,7 +42,7 @@
 from powerapi.processor.pre.k8s.k8s_pre_processor_handlers import K8sPreProcessorActorHWPCReportHandler, \
     K8sPreProcessorActorStartMessageHandler, K8sPreProcessorActorPoisonPillMessageHandler
 from powerapi.processor.processor_actor import ProcessorState, ProcessorActor
-from powerapi.report import HWPCReport
+from powerapi.report.report import Report
 
 ADDED_EVENT = 'ADDED'
 DELETED_EVENT = 'DELETED'
@@ -211,6 +211,6 @@ def setup(self):
         """
         ProcessorActor.setup(self)
         self.add_handler(message_type=StartMessage, handler=K8sPreProcessorActorStartMessageHandler(state=self.state))
-        self.add_handler(message_type=HWPCReport, handler=K8sPreProcessorActorHWPCReportHandler(state=self.state))
+        self.add_handler(message_type=Report, handler=K8sPreProcessorActorHWPCReportHandler(state=self.state))
         self.add_handler(message_type=PoisonPillMessage,
                          handler=K8sPreProcessorActorPoisonPillMessageHandler(state=self.state))
diff --git a/tests/unit/actor/abstract_test_actor.py b/tests/unit/actor/abstract_test_actor.py
index e34db9a3..a8525be5 100644
--- a/tests/unit/actor/abstract_test_actor.py
+++ b/tests/unit/actor/abstract_test_actor.py
@@ -261,7 +261,9 @@ def init_actor(self, actor):
     def started_actor(self, init_actor):
         init_actor.send_control(StartMessage('test_case'))
         _ = init_actor.receive_control(2000)
-        return init_actor
+        yield init_actor
+
+        init_actor.send_control(PoisonPillMessage())
 
     @pytest.fixture
     def started_fake_pusher_power_report(self, dummy_pipe_in):
diff --git a/tests/unit/dispatcher/test_dispatcher_actor.py b/tests/unit/dispatcher/test_dispatcher_actor.py
index 9272da4b..d53be6b4 100644
--- a/tests/unit/dispatcher/test_dispatcher_actor.py
+++ b/tests/unit/dispatcher/test_dispatcher_actor.py
@@ -331,23 +331,23 @@ def test_send_Report1_without_dispatch_rule_for_Report1_dont_create_formula(self
     @define_dispatch_rules([(Report1, DispatchRule1AB(primary=True))])
     def test_send_Report1_with_dispatch_rule_for_Report1_and_no_formula_created_must_create_a_new_formula(self,
                                                                                                           started_actor,
-                                                                                                          dummy_pipe_out,
-                                                                                                          shutdown_system):
+                                                                                                          dummy_pipe_out):
 
         """
             Check that a formula is created when a report is received
         """
         started_actor.send_data(REPORT_1)
-        _, power_report = recv_from_pipe(dummy_pipe_out, 2)
+        _, power_report = recv_from_pipe(dummy_pipe_out, 0.2)
         assert isinstance(power_report, PowerReport)
         assert power_report.power == 42
 
+        # started_actor.send_control(PoisonPillMessage())
+
     @pytest.mark.usefixtures("shutdown_system")
     @define_dispatch_rules([(Report1, DispatchRule1AB(primary=True))])
     def test_send_Report1_with_dispatch_rule_for_Report1_and_one_formula_send_report_to_formula(self,
                                                                                                 dispatcher_with_formula,
-                                                                                                dummy_pipe_out,
-                                                                                                shutdown_system):
+                                                                                                dummy_pipe_out):
         """
             Check that DispatcherActor with a created formula sent a report to it
         """
@@ -367,8 +367,7 @@ def test_send_Report1_with_dispatch_rule_for_Report1_and_one_formula_send_report
                             (Report2, DispatchRule2A())])
     def test_send_Report2_with_dispatch_rule_for_Report1_Primary_and_two_formula_send_report_to_all_formula(self,
                                                                                                             dispatcher_with_two_formula,
-                                                                                                            dummy_pipe_out,
-                                                                                                            shutdown_system):
+                                                                                                            dummy_pipe_out):
 
         """
             Check that DispatcherActor sent a report to all existing formulas
@@ -394,7 +393,7 @@ def test_send_Report2_with_dispatch_rule_for_Report1_Primary_and_two_formula_sen
 
     @define_dispatch_rules([(Report1, DispatchRule1AB(primary=True))])
     def test_send_REPORT1_B2_with_dispatch_rule_1AB_must_create_two_formula(self, started_actor,
-                                                                            dummy_pipe_out, shutdown_system):
+                                                                            dummy_pipe_out):
         """
             Check that two formulas are created by DispatcherActor
         """
@@ -411,8 +410,7 @@ def test_send_REPORT1_B2_with_dispatch_rule_1AB_must_create_two_formula(self, st
                             (Report3, DispatchRule3())])
     def test_send_REPORT3_on_dispatcher_with_two_formula_and_dispatch_rule_1AB_send_report_to_one_formula(self,
                                                                                                           dispatcher_with_two_formula,
-                                                                                                          dummy_pipe_out,
-                                                                                                          shutdown_system):
+                                                                                                          dummy_pipe_out):
 
         """
             Check that 3 reports are produced by formulas when DispatcherActor receives
@@ -431,8 +429,7 @@ def test_send_REPORT3_on_dispatcher_with_two_formula_and_dispatch_rule_1AB_send_
         assert recv_from_pipe(dummy_pipe_out, 0.5) == (None, None)
 
     @define_dispatch_rules([(Report1, DispatchRule1AB(primary=True))])
-    def test_send_PoisonPillMessage_make_dispatcher_forward_it_to_formula(self, dispatcher_with_two_formula,
-                                                                          shutdown_system):
+    def test_send_PoisonPillMessage_make_dispatcher_forward_it_to_formula(self, dispatcher_with_two_formula):
         """
             Check that a PoissonPillMessage stops the DispatcherActor as well as their formulas
         """