diff --git a/firmware/util/efilib.h b/firmware/util/efilib.h
index 1250aeb239..fbdd9e6f82 100644
--- a/firmware/util/efilib.h
+++ b/firmware/util/efilib.h
@@ -80,7 +80,6 @@ char* itoa10(char *p, int num);
 bool strEqualCaseInsensitive(const char *str1, const char *str2);
 bool strEqual(const char *str1, const char *str2);
 
-// Currently used by air-interp. tCharge mode (see EngineState::updateTChargeK()).
 float limitRateOfChange(float newValue, float oldValue, float incrLimitPerSec, float decrLimitPerSec, float secsPassed);
 
 bool isPhaseInRange(float test, float current, float next);