diff --git a/firmware/controllers/actuators/idle_thread.cpp b/firmware/controllers/actuators/idle_thread.cpp
index 9f0b208309..b8e68a6b7f 100644
--- a/firmware/controllers/actuators/idle_thread.cpp
+++ b/firmware/controllers/actuators/idle_thread.cpp
@@ -148,7 +148,7 @@ percent_t IdleController::getOpenLoop(Phase phase, float rpm, float clt, SensorR
 		return interpolate2d(rpm, config->iacCoastingRpmBins, config->iacCoasting);
 	}
 
-	percent_t running = getRunningOpenLoop(IIdleController::Phase::Cranking, rpm, clt, tps);
+	percent_t running = getRunningOpenLoop(phase, rpm, clt, tps);
 
 	// Interpolate between cranking and running over a short time
 	// This clamps once you fall off the end, so no explicit check for >1 required
diff --git a/unit_tests/tests/test_idle_controller.cpp b/unit_tests/tests/test_idle_controller.cpp
index 17c01e9b43..3143909745 100644
--- a/unit_tests/tests/test_idle_controller.cpp
+++ b/unit_tests/tests/test_idle_controller.cpp
@@ -251,7 +251,8 @@ TEST(idle_v2, openLoopRunningTaper) {
 	EngineTestHelper eth(engine_type_e::TEST_ENGINE);
 	StrictMock<MockOpenLoopIdler> dut;
 
-	EXPECT_CALL(dut, getRunningOpenLoop(IIdleController::Phase::Cranking, 0, 30, SensorResult(0))).WillRepeatedly(Return(25));
+	EXPECT_CALL(dut, getRunningOpenLoop(IIdleController::Phase::CrankToIdleTaper, 0, 30, SensorResult(0))).WillRepeatedly(Return(25));
+	EXPECT_CALL(dut, getRunningOpenLoop(IIdleController::Phase::Running, 0, 30, SensorResult(0))).WillRepeatedly(Return(25));
 	EXPECT_CALL(dut, getCrankingOpenLoop(30)).WillRepeatedly(Return(75));
 
 	// 0 cycles - no taper yet, pure cranking value