diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index 4e4a20a6b7..ae958101f6 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -471,6 +471,10 @@ void commonInitEngineController() {
 	initLaunchControl();
 #endif
 
+#if EFI_UNIT_TEST
+	engine->rpmCalculator.Register();
+#endif /* EFI_UNIT_TEST */
+
 #if (EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT) || EFI_SIMULATOR || EFI_UNIT_TEST
 	if (engineConfiguration->isEngineControlEnabled) {
 		initAuxValves();