diff --git a/unit_tests/test_startOfCrankingPrimingPulse.cpp b/unit_tests/test_startOfCrankingPrimingPulse.cpp
index 6e03efd6ec..7040a52b89 100644
--- a/unit_tests/test_startOfCrankingPrimingPulse.cpp
+++ b/unit_tests/test_startOfCrankingPrimingPulse.cpp
@@ -18,6 +18,11 @@ void testPlainCrankingWithoutAdvancedFeatures() {
 	setupSimpleTestEngineWithMafAndTT_ONE_trigger(&eth);
 	assertEqualsM("RPM=0", 0, engine->rpmCalculator.getRpm(PASS_ENGINE_PARAMETER_SIGNATURE));
 
+	eth.fireTriggerEvents2(1, MS2US(200));
+	// still no RPM since need to cycles measure cycle duration
+	assertEqualsM("RPM#1", 0, engine->rpmCalculator.getRpm(PASS_ENGINE_PARAMETER_SIGNATURE));
+	eth.fireTriggerEvents2(1, MS2US(200));
+	assertEqualsM("RPM#2", 300, engine->rpmCalculator.getRpm(PASS_ENGINE_PARAMETER_SIGNATURE));
 
 }