diff --git a/unit_tests/tests/trigger/test_injection_scheduling.cpp b/unit_tests/tests/trigger/test_injection_scheduling.cpp
index b7cda3da80..effdfb7fa3 100644
--- a/unit_tests/tests/trigger/test_injection_scheduling.cpp
+++ b/unit_tests/tests/trigger/test_injection_scheduling.cpp
@@ -33,9 +33,9 @@ TEST(injectionScheduling, NormalDutyCycle) {
 
 		// Should schedule one normal injection:
 		// rising edge now
-		EXPECT_CALL(mockExec, scheduleByTimestampNt("test", &event.signalTimerUp, nowNt + 0, _));
+		EXPECT_CALL(mockExec, scheduleByTimestampNt(testing::NotNull(), &event.signalTimerUp, nowNt + 0, _));
 		// falling edge 10ms later
-		EXPECT_CALL(mockExec, scheduleByTimestampNt("test", &event.endOfInjectionEvent, nowNt + MS2NT(20), _));
+		EXPECT_CALL(mockExec, scheduleByTimestampNt(testing::NotNull(), &event.endOfInjectionEvent, nowNt + MS2NT(20), _));
 	}
 
 	engine->rpmCalculator.oneDegreeUs = 100;