diff --git a/sunnypilot/common/tests/test_param_watcher.py b/sunnypilot/common/tests/test_param_watcher.py
index 60fdd8cad7..2579530748 100644
--- a/sunnypilot/common/tests/test_param_watcher.py
+++ b/sunnypilot/common/tests/test_param_watcher.py
@@ -6,7 +6,7 @@ import tracemalloc
 from openpilot.common.params import Params
 from openpilot.common.params_pyx import UnknownKeyName
 
-from openpilot.sunnypilot.common.param_watcher import ParamWatcher
+from openpilot.sunnypilot.common.param_watcher import ParamWatcher, IN_MODIFY
 
 
 class TestParamWatcher:
@@ -82,10 +82,11 @@ class TestParamWatcher:
   def test_cache_invalidation_simulation(self, param_watcher):
     self.params.put(self.bytes_key, b"old")
     assert param_watcher.get(self.bytes_key) == b"old"
+    time.sleep(0.2)
 
     event = threading.Event()
     param_watcher.add_watcher(lambda key, mask: event.set())
-    param_watcher._trigger_callbacks(self.bytes_key, 0)  # mask=0 for simulation
+    param_watcher._trigger_callbacks(self.bytes_key, IN_MODIFY)
     assert event.wait(timeout=2), "Callback not triggered"
 
     self.params.put(self.bytes_key, b"new")