diff --git a/firmware/controllers/algo/engine.h b/firmware/controllers/algo/engine.h
index 30bce9b561..c746f339c3 100644
--- a/firmware/controllers/algo/engine.h
+++ b/firmware/controllers/algo/engine.h
@@ -330,6 +330,7 @@ trigger_type_e getVvtTriggerType(vvt_mode_e vvtMode);
 void applyNonPersistentConfiguration();
 void prepareOutputSignals();
 
+// todo: huh we also have validateConfig()?!
 void validateConfiguration();
 void scheduleReboot();
 bool isLockedFromUser();
diff --git a/firmware/controllers/engine_controller.h b/firmware/controllers/engine_controller.h
index c7adfaf020..8bdd6e1ffa 100644
--- a/firmware/controllers/engine_controller.h
+++ b/firmware/controllers/engine_controller.h
@@ -8,6 +8,7 @@
 
 #pragma once
 
+// todo: huh we also have validateConfiguration()?!
 bool validateConfig();
 char * getPinNameByAdcChannel(const char *msg, adc_channel_e hwChannel, char *buffer);
 void initPeriodicEvents();