diff --git a/selfprivacy_api/services/test_service/__init__.py b/selfprivacy_api/services/test_service/__init__.py
index da4960a..07b460b 100644
--- a/selfprivacy_api/services/test_service/__init__.py
+++ b/selfprivacy_api/services/test_service/__init__.py
@@ -23,6 +23,7 @@ class DummyService(Service):
     """A test service"""
 
     folders: List[str] = []
+    startstop_delay = 0
 
     def __init_subclass__(cls, folders: List[str]):
         cls.folders = folders
@@ -119,19 +120,23 @@ class DummyService(Service):
         pass
 
     @classmethod
-    def stop(cls, delay=DEFAULT_DELAY):
+    def set_delay(cls, new_delay):
+        cls.startstop_delay = new_delay
+
+    @classmethod
+    def stop(cls):
         cls.set_status(ServiceStatus.DEACTIVATING)
-        cls.change_status_with_async_delay(ServiceStatus.INACTIVE, delay)
+        cls.change_status_with_async_delay(ServiceStatus.INACTIVE, cls.startstop_delay)
 
     @classmethod
-    def start(cls, delay=DEFAULT_DELAY):
+    def start(cls):
         cls.set_status(ServiceStatus.ACTIVATING)
-        cls.change_status_with_async_delay(ServiceStatus.ACTIVE, delay)
+        cls.change_status_with_async_delay(ServiceStatus.ACTIVE, cls.startstop_delay)
 
     @classmethod
-    def restart(cls, delay=DEFAULT_DELAY):
+    def restart(cls):
         cls.set_status(ServiceStatus.RELOADING)  # is a correct one?
-        cls.change_status_with_async_delay(ServiceStatus.ACTIVE, delay)
+        cls.change_status_with_async_delay(ServiceStatus.ACTIVE, cls.startstop_delay)
 
     @staticmethod
     def get_configuration():
diff --git a/tests/test_services.py b/tests/test_services.py
index 4d4c8f4..12889c3 100644
--- a/tests/test_services.py
+++ b/tests/test_services.py
@@ -30,13 +30,14 @@ def test_unimplemented_folders_raises():
 
 def test_delayed_start_stop(raw_dummy_service):
     dummy = raw_dummy_service
+    dummy.set_delay(0.3)
 
-    dummy.stop(delay=0.3)
+    dummy.stop()
     assert dummy.get_status() == ServiceStatus.DEACTIVATING
     wait_until_true(lambda: dummy.get_status() == ServiceStatus.INACTIVE)
     assert dummy.get_status() == ServiceStatus.INACTIVE
 
-    dummy.start(delay=0.3)
+    dummy.start()
     assert dummy.get_status() == ServiceStatus.ACTIVATING
     wait_until_true(lambda: dummy.get_status() == ServiceStatus.ACTIVE)
     assert dummy.get_status() == ServiceStatus.ACTIVE