diff --git a/firmware/config/engines/custom_engine.cpp b/firmware/config/engines/custom_engine.cpp
index 5fee7f2508..0055fca56e 100644
--- a/firmware/config/engines/custom_engine.cpp
+++ b/firmware/config/engines/custom_engine.cpp
@@ -48,7 +48,7 @@ static void toggleTestAndScheduleNext() {
 /**
  * https://github.com/rusefi/rusefi/issues/557 common rail / direct injection scheduling control test
  */
-void test557init(void) {
+void runSchedulingPrecisionTestIfNeeded(void) {
 	if (engineConfiguration->test557pin == GPIO_UNASSIGNED ||
 			engineConfiguration->test557pin == GPIOA_0) {
 		return;
diff --git a/firmware/config/engines/custom_engine.h b/firmware/config/engines/custom_engine.h
index 9d24c32805..2f9de966d4 100644
--- a/firmware/config/engines/custom_engine.h
+++ b/firmware/config/engines/custom_engine.h
@@ -12,7 +12,7 @@
 void setCustomEngineConfiguration(DECLARE_ENGINE_PARAMETER_SIGNATURE);
 void setFrankenso_01_LCD(board_configuration_s *boardConfiguration);
 void disableLCD(board_configuration_s *boardConfiguration);
-void test557init(void);
+void runSchedulingPrecisionTestIfNeeded(void);
 
 void setFrankensoBoardTestConfiguration(DECLARE_ENGINE_PARAMETER_SIGNATURE);
 
diff --git a/firmware/rusefi.cpp b/firmware/rusefi.cpp
index 5e9e4222a2..b303a78457 100644
--- a/firmware/rusefi.cpp
+++ b/firmware/rusefi.cpp
@@ -222,7 +222,7 @@ void runRusEfi(void) {
 #endif
 	startStatusThreads();
 
-	test557init();
+	runSchedulingPrecisionTestIfNeeded();
 
 	rememberCurrentConfiguration();