diff --git a/firmware/config/engines/custom_engine.cpp b/firmware/config/engines/custom_engine.cpp
index a2e61553bc..425552ef64 100644
--- a/firmware/config/engines/custom_engine.cpp
+++ b/firmware/config/engines/custom_engine.cpp
@@ -913,7 +913,7 @@ function onTick()
     --print('Rpm ' .. rpm)
 	--print('getTimeSinceTriggerEventMs ' .. getTimeSinceTriggerEventMs())
 	enableCompressionReleaseSolenoid = getTimeSinceTriggerEventMs() < compReleaseDulationLimit and rpm < rpmLimitSetting
-    duty = enableCompressionReleaseSolenoid and 100 or 0
+    duty = enableCompressionReleaseSolenoid and 1 or 0
     print("Compression release solenoid " .. duty)
 	setPwmDuty(outputIndex, duty)
   else
diff --git a/firmware/controllers/system/timer/pwm_generator_logic.cpp b/firmware/controllers/system/timer/pwm_generator_logic.cpp
index a55fe36e9f..bb891b6703 100644
--- a/firmware/controllers/system/timer/pwm_generator_logic.cpp
+++ b/firmware/controllers/system/timer/pwm_generator_logic.cpp
@@ -336,6 +336,9 @@ void startSimplePwmExt(SimplePwm *state, const char *msg,
 	startSimplePwm(state, msg, executor, output, frequency, dutyCycle);
 }
 
+/**
+ * @param dutyCycle value between 0 and 1
+ */
 void startSimplePwmHard(SimplePwm *state, const char *msg,
 		ExecutorInterface *executor,
 		brain_pin_e brainPin, OutputPin *output, float frequency,