diff --git a/unit_tests/test-framework/engine_test_helper.cpp b/unit_tests/test-framework/engine_test_helper.cpp
index b16483d60e..f36cf451cc 100644
--- a/unit_tests/test-framework/engine_test_helper.cpp
+++ b/unit_tests/test-framework/engine_test_helper.cpp
@@ -282,14 +282,14 @@ void EngineTestHelper::fireTriggerEvents(int count) {
 	fireTriggerEvents2(count, 5); // 5ms
 }
 
-void EngineTestHelper::assertInjectorUpEvent(const char *msg, int eventIndex, efitimeus_t momentX, long injectorIndex) {
+void EngineTestHelper::assertInjectorUpEvent(const char *msg, int eventIndex, efitimeus_t momentUs, long injectorIndex) {
 	InjectionEvent *event = &engine.injectionEvents.elements[injectorIndex];
-	assertEvent(msg, eventIndex, (void*)turnInjectionPinHigh, momentX, event);
+	assertEvent(msg, eventIndex, (void*)turnInjectionPinHigh, momentUs, event);
 }
 
-void EngineTestHelper::assertInjectorDownEvent(const char *msg, int eventIndex, efitimeus_t momentX, long injectorIndex) {
+void EngineTestHelper::assertInjectorDownEvent(const char *msg, int eventIndex, efitimeus_t momentUs, long injectorIndex) {
 	InjectionEvent *event = &engine.injectionEvents.elements[injectorIndex];
-	assertEvent(msg, eventIndex, (void*)turnInjectionPinLow, momentX, event);
+	assertEvent(msg, eventIndex, (void*)turnInjectionPinLow, momentUs, event);
 }
 
 scheduling_s * EngineTestHelper::assertEvent5(const char *msg, int index, void *callback, efitimeus_t expectedTimestamp) {
@@ -325,8 +325,8 @@ scheduling_s * EngineTestHelper::assertScheduling(const char *msg, int index, sc
 	return actual;
 }
 
-void EngineTestHelper::assertEvent(const char *msg, int index, void *callback, efitimeus_t momentX, InjectionEvent *expectedEvent) {
-	scheduling_s *event = assertEvent5(msg, index, callback, momentX);
+void EngineTestHelper::assertEvent(const char *msg, int index, void *callback, efitimeus_t momentUs, InjectionEvent *expectedEvent) {
+	scheduling_s *event = assertEvent5(msg, index, callback, momentUs);
 
 	InjectionEvent *actualEvent = (InjectionEvent *)event->action.getArgument();
 
diff --git a/unit_tests/test-framework/engine_test_helper.h b/unit_tests/test-framework/engine_test_helper.h
index ce03d9c93d..ce7c07f0ab 100644
--- a/unit_tests/test-framework/engine_test_helper.h
+++ b/unit_tests/test-framework/engine_test_helper.h
@@ -95,7 +95,7 @@ public:
 
 	const AngleBasedEvent* assertTriggerEvent(const char *msg, int index, AngleBasedEvent *expected, void *callback, angle_t enginePhase);
 
-	void assertEvent(const char *msg, int index, void *callback, efitimeus_t momentX, InjectionEvent *event);
+	void assertEvent(const char *msg, int index, void *callback, efitimeus_t momentUs, InjectionEvent *event);
 	void assertInjectorUpEvent(const char *msg, int eventIndex, efitimeus_t momentX, long injectorIndex);
 	void assertInjectorDownEvent(const char *msg, int eventIndex, efitimeus_t momentX, long injectorIndex);
 	// todo: open question if this is worth a helper method or should be inlined?